HCl safety data sheet: what it says and what you must do

Last updated 2026-07-09

What is a safety data sheet (SDS), and why does HCl have one?

A safety data sheet is the standardized hazard document that travels with every hazardous chemical sold or used in a workplace. OSHA requires them under 29 CFR 1910.1200, the Hazard Communication Standard (HazCom 2012), which lined up U.S. rules with the United Nations Globally Harmonized System of Classification and Labelling of Chemicals (GHS). Before 2012, these were called material safety data sheets (MSDS). The format changed from a loose layout to a strict 16-section template. If someone asks you "what is a material safety data sheet" or "what is an SDS," the honest answer is: same concept, new name, tighter format. ^[1]

Hydrochloric acid (HCl, also called muriatic acid) gets an SDS because it meets OSHA's definition of a hazardous chemical. It burns skin and eyes, is toxic to breathe, and releases hydrogen chloride gas that damages the respiratory tract even at low concentrations. OSHA classifies it as both a physical and a health hazard. Any employer whose workers mix, handle, clean with, or store HCl must have the SDS on file and accessible. That covers manufacturing, janitorial contractors, pool supply, food processing sanitation, metal finishing, and dozens of other sectors. ^[2]

The SDS is more than a reference document. It is the base of your written hazard communication program. OSHA expects you to use it to pick PPE, set engineering controls, write emergency procedures, and design worker training. Think of it as the technical brief that makes everything else possible.

What are the 16 sections of an HCl SDS, and what does each one mean?

OSHA Appendix D to 29 CFR 1910.1200 sets the mandatory 16-section format. Here is what each section holds for HCl specifically, and what you actually need to pull from it. ^[1]

Section 1: Identification. Product name, manufacturer or importer, emergency contact number (usually a 24-hour Chemtrec line: 1-800-424-9300), and intended uses. For HCl you will see synonyms like hydrogen chloride, hydrochloric acid, and muriatic acid. Confirm the product name on your SDS matches your container labels.

Section 2: Hazard(s) identification. This is where the GHS classification lives. HCl is typically classified as Acute Toxicity (Category 3, inhalation), Skin Corrosion (Category 1A), and Serious Eye Damage (Category 1). The signal word is "Danger," the highest level. Pictograms include the corrosion symbol and the exclamation mark. Hazard statements include "Causes severe skin burns and eye damage" and "Toxic if inhaled." ^[3]

Section 3: Composition/information on ingredients. For concentrated HCl solutions (typically 36 to 38% by weight), the SDS lists hydrogen chloride (CAS 7647-01-0) and water. Lower concentrations used in pool chemicals or cleaning products may list HCl at 10 to 30%.

Section 4: First-aid measures. Flush skin and eyes with water for at least 15 to 20 minutes. Remove contaminated clothing. For inhalation, move to fresh air immediately and get medical attention if breathing is difficult. Ingestion: do not induce vomiting; get emergency medical help. These are the steps you train workers to memorize before they touch the chemical.

Section 5: Fire-fighting measures. HCl itself does not burn, but it reacts with many metals to produce flammable hydrogen gas. Firefighters should use SCBA (self-contained breathing apparatus). The SDS notes that HCl can decompose on heating to release hydrogen chloride gas.

Section 6: Accidental release measures. Evacuate the area. Ventilate. Use appropriate PPE (at minimum: chemical splash goggles, face shield, acid-resistant gloves, and a respirator rated for acid gases). Neutralize small spills with soda ash or lime, then absorb and containerize. Never use sawdust or other combustible absorbents.

Section 7: Handling and storage. Store HCl away from metals, bases, and oxidizers. Use a corrosive-rated storage cabinet. Keep containers tightly closed. Handle in ventilated areas. The SDS specifies temperature ranges and incompatible materials.

Section 8: Exposure controls and personal protection. This section gives you the numbers you need for PPE selection. OSHA's permissible exposure limit (PEL) for HCl is 5 ppm as a ceiling value, which means it must never be exceeded rather than averaged over 8 hours. NIOSH's recommended exposure limit (REL) is also 5 ppm ceiling. ACGIH sets its TLV-C at 2 ppm, which is stricter. ^[4] Engineering controls usually include local exhaust ventilation and closed systems. Required PPE includes chemical splash goggles, a face shield, acid-resistant gloves (butyl rubber or neoprene), and a full-face respirator with acid-gas cartridges or supplied air for high-concentration work.

Section 9: Physical and chemical properties. HCl solution: colorless to slightly yellow, pungent odor, pH well below 1 at full concentration. Vapor pressure for 37% solution is roughly 16 kPa at 20 degrees C. Boiling point varies with concentration. Specific gravity is about 1.18 for a 36% solution.

Section 10: Stability and reactivity. HCl is stable under normal conditions but reacts violently with strong bases, oxidizing agents (like bleach, which produces chlorine gas), and most metals. This is one of the sections that matters most for small businesses. Mixing HCl with bleach is a well-documented source of workplace injuries and deaths.

Section 11: Toxicological information. Routes of exposure (inhalation, skin, eye, ingestion), symptoms, and any carcinogenicity data. Hydrogen chloride is not classified as a carcinogen by OSHA, IARC, or NTP. Repeated inhalation can cause chronic bronchitis and lung damage.

Section 12: Ecological information. Aquatic toxicity, persistence, bioaccumulation. HCl dissociates completely in water and can drop the pH of aquatic environments. This section matters for spill reporting under EPA rules.

Section 13: Disposal considerations. Regulated as a hazardous waste under RCRA. Neutralize before disposal or consult your licensed waste hauler. Do not pour concentrated HCl down a drain without checking local pretreatment requirements.

Section 14: Transport information. DOT classification: Corrosive liquid, acidic, inorganic, n.o.s. (Hydrogen chloride, solution). UN number: UN1789 for hydrochloric acid, or UN2986 depending on concentration. Packing group II or III. This affects how you label shipments and what placards go on vehicles.

Section 15: Regulatory information. OSHA HazCom, SARA Title III (HCl is a Section 302 Extremely Hazardous Substance above 500 lbs), CERCLA reportable quantity (5,000 lbs for HCl solutions), California Prop 65, and Clean Air Act Section 112(r) if you hold more than 15,000 lbs.

Section 16: Other information. Revision date, key changes from the prior version, and preparer contact. Check this section to confirm you have a current SDS. An SDS more than three to five years old is worth a fresh download from the manufacturer's website.

What do OSHA's exposure limits for HCl actually mean in practice?

The 5 ppm ceiling for hydrogen chloride is not an average. It is an absolute limit that cannot be crossed at any moment during the workday. ^[4] That makes it stricter than a typical 8-hour time-weighted average (TWA) limit. If your workers pour or mix concentrated HCl in an enclosed space, they can hit 5 ppm fast without good ventilation.

ACGIH publishes a more conservative threshold limit value ceiling (TLV-C) of 2 ppm. Many industrial hygienists design ventilation to the ACGIH number even though OSHA only enforces 5 ppm. The gap has a real consequence. If a worker develops symptoms at a level between 2 and 5 ppm, OSHA cannot cite you for the PEL, but you could still get a General Duty Clause citation if you knew about the hazard and did nothing. ^[5]

Symptoms below the PEL include eye and throat irritation, coughing, and a sharp odor. Workers who report these despite air monitoring below 5 ppm are telling you the engineering controls need work. Take that seriously.

Exposure Limit	Value	Type	Authority
OSHA PEL	5 ppm	Ceiling (never exceed)	29 CFR 1910.1000 Table Z-1
NIOSH REL	5 ppm	Ceiling	NIOSH Pocket Guide
ACGIH TLV-C	2 ppm	Ceiling	ACGIH 2024 TLVs
IDLH (immediately dangerous to life or health)	50 ppm	Emergency limit	NIOSH

For air monitoring, OSHA Method ID-165SG covers hydrogen chloride sampling. If you have any doubt about worker exposures, hire an industrial hygienist to run a baseline survey before you assume your ventilation is good enough.

What PPE does the HCl SDS require, and how do you pick the right glove?

Section 8 of the SDS lists PPE, but it often names several options without telling you which one fits your task. That call is your job as the employer, and 29 CFR 1910.132(d) requires a written PPE hazard assessment before workers use any PPE. ^[6]

For HCl, the minimum for splash risk is chemical splash goggles (not safety glasses), a face shield worn over the goggles, acid-resistant gloves, and a chemical-resistant apron or suit. For inhalation risk above the PEL, you need a respirator. A half-face air-purifying respirator with acid-gas cartridges (NIOSH-approved, cartridge designation OV/AG or AG for acid gases) works up to 10 times the PEL. Above 50 ppm (the IDLH), only supplied-air or SCBA is acceptable.

Glove selection trips up a lot of small businesses. The SDS just says "chemical-resistant gloves." For HCl:

• Butyl rubber is the best general choice. It resists hydrogen chloride and most inorganic acids well.
• Neoprene works for shorter contact times and lower concentrations.
• Nitrile gives minimal protection against concentrated HCl and should not be your primary choice for direct handling.
• Latex degrades fast and is not appropriate.

Breakthrough time matters. At full concentration, even butyl rubber gloves have a finite breakthrough time (often 60 to 480 minutes depending on thickness). Check the glove maker's chemical resistance chart for the exact concentration you use, more than the generic chemical name.

If your workers wear respirators for HCl work, you have a full medical evaluation, fit-testing, and written respiratory protection program obligation under 29 CFR 1910.134. ^[11] That is a separate requirement, triggered by the PPE decision you make from the SDS.

Where do you have to keep the SDS, and who needs to access it?

OSHA's Hazard Communication Standard at 29 CFR 1910.1200(g)(8) requires that SDSs be "readily accessible to employees in their work area during their work shift." ^[1] The phrase "readily accessible" has teeth. An SDS locked in a supervisor's office does not qualify. One that makes a worker call someone or leave the work area for more than a minute or two is also questionable.

You have three acceptable storage formats:

1. Paper SDS binder. The old-school approach. A binder organized by chemical name, kept at or near the point of use. Many businesses keep a master material safety data sheet binder at the main office and copies at each work area. Binders never go offline, which is why even shops with electronic systems keep a paper backup.

2. Electronic system. A computer terminal, tablet, or kiosk with database access. OSHA allows this if workers know how to use it, the system has a backup for power outages, and nothing blocks access.

3. Combination. Electronic as primary, paper as backup. This is the most defensible setup.

For multi-employer worksites (a contractor bringing HCl into a facility, say), the host employer and the contractor must coordinate SDS access under 29 CFR 1910.1200(e)(2). Both need a plan.

OSHA also lets employers keep a central SDS file off-site for workers who move between locations, like a field service team, as long as they can get the information in an emergency by phone within a reasonable time. Letters of interpretation address mobile workers, but "reasonable" is not precisely defined, and the agency has cited employers when the only option was a non-emergency office line.

Because HCl is an extremely hazardous substance under SARA Title III, your local emergency planning committee (LEPC) should also know you store it if you exceed the threshold planning quantity of 500 pounds. ^[10]

What worker training does OSHA require based on the HCl SDS?

The HazCom standard at 29 CFR 1910.1200(h) requires training before workers are first exposed to a hazardous chemical, and again whenever a new chemical hazard shows up. ^[1] "Before first exposure" means before the first day they could meet HCl, not after a week on the job.

Training must cover:

• How to read and use an SDS (all 16 sections)
• The location of the SDS binder or system
• How to read GHS labels (pictograms, signal words, hazard statements, precautionary statements)
• The specific hazards of the chemicals in their work area
• Protective measures: engineering controls, work practices, PPE
• Emergency procedures for spills, leaks, and exposures

For HCl, make sure workers can spot the corrosion pictogram and understand that "Danger" flags the most severe hazard class. They should know the first-aid steps from Section 4 by heart, more than where to find them.

OSHA does not set a training length or require a third-party trainer. You can run HazCom training yourself. Document it: date, trainer name, employee names, and what you covered. Keep those records. OSHA inspectors ask for them.

To build your full written HazCom program without hiring a consultant, SafetyFolio's safety program generator walks you through every required element in about 15 minutes and produces a program you can tailor to your specific chemicals, HCl included.

If HCl triggers respiratory protection requirements, workers need OSHA training specific to the respiratory protection standard. That is separate from HazCom training, though you can run both in one session.

How do GHS labels on HCl containers connect to the SDS?

Every container of HCl in your workplace needs a GHS-compliant label under 29 CFR 1910.1200(f). The label and the SDS are two halves of the same system. If they contradict each other, something is wrong and you need to call the manufacturer. ^[1]

A compliant HCl label has six required elements:

1. Product identifier (HCl or hydrochloric acid, matching the SDS) 2. Signal word: "Danger" 3. Hazard statements, such as "Causes severe skin burns and eye damage" and "Toxic if inhaled" 4. Precautionary statements, such as "Do not breathe vapors. Use only outdoors or in a well-ventilated area. Wear protective gloves, protective clothing, eye protection, and face protection." 5. Pictograms: at minimum the corrosion symbol (a hand and surface being eaten by liquid) and the exclamation mark 6. Supplier identification

Secondary containers count too. Any container you pour HCl into from the original must be labeled. The exception in 29 CFR 1910.1200(f)(8) only covers portable containers that one worker uses during a single shift and never leaves unattended. A shared spray bottle of diluted HCl in a janitor's closet must be labeled.

Do not peel off or deface original labels. OSHA cites for this often, and it is an easy target during an inspection. If a label is damaged or faded, print a fresh GHS-compliant one and stick it on before the container goes back into service.

What are the emergency response requirements when HCl spills or someone is exposed?

Section 6 of the HCl SDS gives you the starting point for spill response, but OSHA can require more than the SDS alone once you keep enough HCl on site.

Your workers need three things settled before they touch a spill: what PPE goes on first, whether the spill is small enough to handle in-house or needs emergency services, and where the emergency eyewash and shower are. OSHA's 29 CFR 1910.151(c) requires emergency eyewash and shower equipment when workers may be exposed to corrosive materials. For HCl work, that is not optional. ^[7] The ANSI Z358.1 standard, which OSHA references, says the station must be reachable within 10 seconds of the exposure point.

For inhalation exposure, the SDS says move to fresh air. In practice you want a protocol: one person evacuates the exposed worker, someone else calls 911 if the worker struggles to breathe or loses consciousness, and a third person (in proper PPE) stabilizes the spill if it is safe. Your emergency action plan, required under 29 CFR 1910.38, should lay this out for HCl.

Store more than 1 pound of HCl as hydrogen chloride gas, or more than 2,500 pounds as a solution above certain concentrations, and you may also trigger OSHA's Process Safety Management standard (29 CFR 1910.119) or EPA's Risk Management Program (RMP) rules. Check those thresholds against your inventory.

For CERCLA reporting, a release of 5,000 pounds or more of HCl solution (1 pound for anhydrous hydrogen chloride gas) requires a call to the National Response Center at 1-800-424-8802. Those numbers come from EPA's list of hazardous substances. ^[10]

How do you get the HCl SDS, and how do you know if it is current?

The manufacturer or importer must send the SDS with the first shipment of HCl and again after any update. You can also download current SDSs straight from the manufacturer's website or from free sources like OSHA's SDS repository, the CDC/NIOSH Pocket Guide, or commercial databases such as MSDSOnline or VelocityEHS.

A few checks to confirm you have a current, valid SDS:

• Section 1 should show a manufacturer name and emergency number that still work.
• Section 16 shows the revision date and version number. An SDS from before June 2015 (when the HazCom 2012 GHS deadline passed) that still uses the old 8-section MSDS format is out of date and noncompliant. ^[1]
• The GHS classification in Section 2 should match current GHS Revision 7 or 8 classifications for hydrogen chloride. Missing signal words or pictograms mean old format.
• Section 8 should list the OSHA PEL, NIOSH REL, and ideally the ACGIH TLV.

When you have several SDSs for the same chemical from different suppliers (common with pool acid or cleaning formulas that vary in concentration), keep them all. Each formulation is technically a different product.

Audit your material safety data sheet binder or electronic system once a year. Pull every SDS for every chemical on your inventory list, confirm your version matches what the manufacturer currently publishes, and replace anything more than a few years old unless you have confirmed there are no updates. Manufacturers must update an SDS within three months of learning new significant hazard information, per 29 CFR 1910.1200(g)(5).

What OSHA violations are common with HCl, and what do they cost?

OSHA's HazCom standard (29 CFR 1910.1200) sits among the top three most-cited standards for general industry, on OSHA's top-ten list every year. ^[8] HCl-specific violations fall into a few buckets:

• Missing or inaccessible SDS. An inspector finds HCl in use and asks for the SDS. Cannot produce it, or the system is down? That is a citable condition under 1910.1200(g).
• No or inadequate training records. Workers handle HCl with no documented HazCom training.
• Unlabeled secondary containers. The shared HCl spray bottle in the break room with no label.
• PPE not being used. Workers handling HCl without gloves or eye protection, or without the PPE the SDS calls for.
• Inadequate written HazCom program. The written program does not list HCl or does not say how workers reach the SDS.

OSHA penalties as of 2024 (adjusted yearly for inflation): serious violations run up to $16,131 per violation. Willful or repeated violations reach $161,323 per violation. ^[9] For a small shop with five employees all using HCl untrained, that adds up quickly per inspection visit.

The General Duty Clause (Section 5(a)(1) of the OSH Act) also reaches HCl hazards that fall outside a specific standard, so OSHA has tools even where the CFR is silent. ^[5]

You can check inspection history for your NAICS code and see what real citations look like at OSHA's enforcement database on osha.gov. That is public data, and it is worth a look before your first inspection.

How does the HCl SDS fit into your overall written hazard communication program?

The SDS is one part of a three-piece system: the written program, labels, and SDSs. Your written HazCom program (required under 29 CFR 1910.1200(e)) has to describe how you manage all three. ^[1] For HCl, the written program should state:

• Where the HCl SDS lives (physical location or URL of your electronic system)
• Who keeps it current
• What tasks involving HCl require what PPE (pulled from Section 8)
• How secondary containers get labeled
• What training workers receive before HCl exposure
• What the emergency procedures are for spills and exposures

Have not written this program yet? Or it lists HCl but skips these specifics? That is your first action item. OSHA inspectors read written programs and cross-check what they say against what they see on the floor. Inconsistencies turn into citations.

The HazCom program is the base for other programs HCl may trigger: your PPE program (if gloves and goggles are required), your respiratory protection program (if airborne levels can top the action level), and your emergency action plan. Get the HazCom program right for HCl and the rest have somewhere to stand.

If you are building or updating your safety programs and want it done without a consultant, look at SafetyFolio's program generator. It is built around the OSHA standards and walks you through HazCom section by section.

For a wider view of how hazard communication fits your overall OSHA obligations, or how an incident report connects to chemical exposure events, those are the natural next steps once your SDS system is locked down.

Frequently asked questions

What is the difference between an SDS and an MSDS?

An MSDS (material safety data sheet) is the old format used before OSHA adopted the GHS system in 2012. An SDS (safety data sheet) follows the GHS 16-section format. They cover the same chemical hazard information, but the SDS has a standard structure that makes specific facts easier to find. OSHA's transition deadline was June 1, 2015. If you still have MSDS documents in your binder, replace them with current GHS-format SDSs from the manufacturer.

Does OSHA require SDSs to be kept in a binder?

No. OSHA requires SDSs to be readily accessible to workers during their shift, but it does not mandate a paper binder. Electronic systems are fine as long as workers know how to use them and there is a backup for power outages or system failures. Many employers use both a central electronic database and a paper safety data sheet binder at each work area as a backup. Either way, the SDS must be there when a worker needs it, with no barriers.

What is the OSHA exposure limit for hydrochloric acid (HCl)?

OSHA's permissible exposure limit (PEL) for hydrogen chloride is 5 ppm as a ceiling value, which means it cannot be exceeded at any point during the workday. This comes from 29 CFR 1910.1000 Table Z-1. NIOSH sets the same ceiling. ACGIH recommends a stricter 2 ppm ceiling. The immediately dangerous to life or health (IDLH) concentration is 50 ppm, above which only supplied-air respirators or SCBA are acceptable.

Do I need to keep an SDS for diluted HCl solutions like pool acid or cleaning products?

Yes. If the product contains HCl at a concentration that meets OSHA's hazard criteria (generally above 1% for corrosive chemicals, though Section 3 of the SDS gives exact thresholds), you need the SDS on file and accessible. Pool acid and many cleaning products contain 10 to 30% HCl and are fully regulated. Request the SDS from your supplier at first purchase and keep it with your other SDSs.

What PPE is required for handling HCl?

At minimum for splash risk: chemical splash goggles, a face shield over the goggles, acid-resistant gloves (butyl rubber recommended for concentrated HCl), and a chemical-resistant apron. For inhalation risk where airborne HCl could exceed 5 ppm, a half-face respirator with acid-gas cartridges is required. Above 50 ppm (the IDLH), only supplied-air or SCBA is acceptable. PPE selection must be documented in a written hazard assessment per 29 CFR 1910.132(d).

How often does an HCl SDS need to be updated?

Manufacturers must update an SDS within three months of learning significant new hazard information, per 29 CFR 1910.1200(g)(5). There is no fixed calendar interval. As the employer, audit your SDSs at least once a year, confirm they match what the manufacturer currently publishes, and replace outdated versions. An SDS still in the old MSDS 8-section format (pre-2015) is definitively out of date and should be replaced right away.

Can I mix HCl with bleach for cleaning?

Never. Mixing hydrochloric acid (or any acid) with bleach (sodium hypochlorite) produces chlorine gas, a highly toxic substance that causes severe respiratory damage and has killed workers. Section 10 of the HCl SDS lists bleach (oxidizing agents) as an incompatible material. This is one of the most common chemical mixing accidents. Workers who use both products need training on this hazard specifically, beyond general HazCom.

What is a GHS label, and what must appear on an HCl container?

A GHS label is the standard container label required by OSHA's HazCom 2012 standard. For HCl, the label must include the product identifier, the signal word "Danger," hazard statements (such as "Causes severe skin burns and eye damage"), precautionary statements (such as "Wear protective gloves and eye/face protection"), pictograms (corrosion and exclamation mark at minimum), and the supplier's name and contact information. Secondary containers you fill must also be labeled unless a single worker uses and empties the container in one shift.

Is HCl regulated under SARA Title III or CERCLA?

Yes to both. Hydrogen chloride is a Section 302 Extremely Hazardous Substance under SARA Title III with a threshold planning quantity (TPQ) of 500 pounds. Store more than that and you must report to your local emergency planning committee (LEPC) and state emergency response commission. Under CERCLA, the reportable quantity for HCl solution is 5,000 pounds (or 1 pound for anhydrous hydrogen chloride). A release above that amount requires notification to the National Response Center.

What first aid do I need on-site for HCl exposure?

For skin or eye contact: immediate water flushing for at least 15 to 20 minutes using an eyewash station or safety shower. OSHA's 29 CFR 1910.151(c) requires emergency eyewash and shower equipment wherever workers may contact corrosive materials, and ANSI Z358.1 says the station must be reachable within 10 seconds. For inhalation: move to fresh air and call 911 if breathing is difficult. Ingestion: do not induce vomiting; seek emergency care. Your SDS Section 4 gives the full first-aid protocol.

How do I train workers on the HCl SDS?

Training must happen before workers are first exposed to HCl, per 29 CFR 1910.1200(h). Cover how to read all 16 SDS sections, where the SDS is kept, HCl-specific hazards, required PPE for each task, first-aid procedures, and emergency spill response. OSHA does not require a specific trainer or format, so you can do it yourself. Document the date, trainer name, and each worker's name. Keep those records indefinitely; OSHA inspectors will ask for them.

What happens if OSHA finds I do not have an SDS for HCl?

A missing or inaccessible SDS is a citable violation under 29 CFR 1910.1200(g). OSHA classifies most HazCom violations as serious, with penalties up to $16,131 per violation as of 2024 (adjusted annually for inflation). If multiple workers are affected or the condition is willful, penalties can reach $161,323 per violation. HazCom is consistently in OSHA's top three most-cited standards, so inspectors look for it specifically.

Where can I download a free HCl SDS?

The most reliable sources are the manufacturer's own website (always the most current version) and OSHA's online SDS repository at osha.gov. The CDC/NIOSH Pocket Guide to Chemical Hazards at cdc.gov/niosh/npg also has hydrogen chloride data. Public databases like PubChem (pubchem.ncbi.nlm.nih.gov) host SDSs from multiple manufacturers. Always confirm the SDS uses the current 16-section GHS format and check the revision date in Section 16.

Do temporary or contract workers handling HCl need the same SDS training?

Yes. Temporary and contract workers have the same rights under the HazCom standard. The host employer must confirm the staffing agency or contractor has provided HazCom training, or provide it themselves before the worker is exposed. OSHA's multi-employer worksite policy places responsibility on the employer who controls the work area. In practice, the safest move is to include HCl SDS training in your site orientation for all workers, no matter who signs their paycheck.

Sources

1. OSHA, Hazard Communication Standard, 29 CFR 1910.1200: HazCom 2012 requires the 16-section SDS format, readily accessible SDSs during each shift, GHS labels, worker training before first exposure, and a written program
2. OSHA, Hazard Communication overview: Employers whose workers handle, mix, or store hazardous chemicals like HCl must maintain and provide access to the SDS
3. OSHA, Hazard Communication Standard Appendix C (label elements) and Appendix D (SDS format), 29 CFR 1910.1200: HCl carries the signal word Danger, the corrosion and exclamation-mark pictograms, and hazard statements including causes severe skin burns and eye damage
4. NIOSH, Pocket Guide to Chemical Hazards: Hydrogen Chloride: OSHA PEL 5 ppm ceiling, NIOSH REL 5 ppm ceiling, IDLH 50 ppm for hydrogen chloride
5. OSHA, General Duty Clause, Section 5(a)(1) of the OSH Act of 1970: General Duty Clause allows OSHA to cite employers for known hazards even where no specific standard applies, including HCl exposures between the ACGIH TLV and the OSHA PEL
6. OSHA, 29 CFR 1910.132 Personal Protective Equipment General Requirements: Employers must perform and document a written PPE hazard assessment before workers use PPE, per 29 CFR 1910.132(d)
7. OSHA, 29 CFR 1910.151 Medical Services and First Aid: Emergency eyewash and shower equipment required wherever workers may be exposed to corrosive materials; ANSI Z358.1 specifies 10-second reachability
8. OSHA, Top 10 Most Frequently Cited Standards: Hazard Communication Standard (29 CFR 1910.1200) is consistently among the top three most-cited OSHA standards for general industry
9. OSHA, Penalties and Debt Collection: Serious violations: up to $16,131 per violation; willful or repeated violations: up to $161,323 per violation as of 2024 (adjusted annually for inflation)
10. EPA, Emergency Planning and Community Right-to-Know Act (EPCRA): Hydrogen chloride is a Section 302 Extremely Hazardous Substance with a threshold planning quantity of 500 pounds; CERCLA reportable quantity for HCl solution is 5,000 lbs
11. OSHA, 29 CFR 1910.134 Respiratory Protection Standard: Employers whose workers use respirators for HCl must have a written respiratory protection program, medical evaluations, and fit-testing