2.3 OSHA Hazard Communication, Safety Data Sheets, Chemical Storage & Labelling

Key Takeaways

  • OSHA's Hazard Communication Standard gives every worker a right to know the identity and hazards of chemicals in the workplace, delivered through labels, Safety Data Sheets and training.
  • A GHS-aligned Safety Data Sheet has 16 standardised sections in a fixed order; Section 4 is first aid and Section 8 is exposure controls and personal protection.
  • 19 NYCRR § 160.25(d) requires owners to keep SDS on file for inspection, in written or electronic form, readily accessible to all employees, who must be told where they are.
  • Chemicals may be mixed only in a dispensing area with adequate ventilation, and flammable or combustible chemicals must be stored in a metal cabinet remote from ignition sources (19 NYCRR § 160.25).
  • 19 NYCRR § 160.26 requires original manufacturer labelling to remain intact, with poisonous or corrosive substances distinctly marked and stored away from public access.
Last updated: August 2026

Hazard Communication, SDS, Chemical Storage & Labelling

Exam Focus: Expect items on the number of SDS sections, which agency owns which standard, and the New York-specific storage rules. The recurring trap is confusing OSHA with EPA: OSHA regulates worker exposure and communication, EPA registers the disinfectants. Know that New York separately requires original labelling to stay intact and flammables to live in a metal cabinet.


1. Which Agency Does What

AgencyJurisdiction in the salon
OSHA — Occupational Safety and Health Administration (US Dept of Labor)Worker safety. Owns the Hazard Communication Standard and the Bloodborne Pathogens Standard. Governs SDS, labelling, training and PPE
EPA — Environmental Protection AgencyRegisters disinfectants and sterilants. New York requires EPA-registered hospital-grade disinfectants under § 160.17
FDA — Food and Drug AdministrationRegulates cosmetics and colour additives; the source of the eyelash-tint restriction in § 160.27(e)
NIOSH — National Institute for Occupational Safety and HealthApproves respirators; § 160.20(h) requires NIOSH-approved N-95 or N-100 respirators
NYS DOS, Division of Licensing ServicesLicensing, Article 27 enforcement, salon inspection
NYS Department of LaborWage, hour and workplace safety enforcement in New York

2. The Hazard Communication Standard

OSHA's Hazard Communication Standard — often called the "right to know" law — rests on the principle that a worker handling a chemical is entitled to know what it is and what it can do. It has four operative parts:

  1. A written hazard communication programme describing how the employer meets the standard.
  2. Labels on every container, carrying a product identifier, signal word, hazard statements, pictograms, precautionary statements and supplier information.
  3. Safety Data Sheets obtained from the manufacturer for every hazardous chemical and made accessible to employees.
  4. Training for employees on the hazards, the labelling system and how to read an SDS.

Since alignment with the Globally Harmonized System (GHS), labels carry standardised pictograms — the flame, the corrosion symbol, the exclamation mark, the health hazard silhouette — and one of two signal words: DANGER for the more severe hazard, WARNING for the less severe.

3. The Sixteen-Section Safety Data Sheet

Every GHS-compliant SDS has 16 sections in a fixed order. The order matters because a stylist reaching for the sheet during an incident needs to know where to look without reading the whole document.

§Content§Content
1Identification9Physical and chemical properties
2Hazard identification10Stability and reactivity
3Composition / ingredients11Toxicological information
4First-aid measures12Ecological information
5Fire-fighting measures13Disposal considerations
6Accidental release measures14Transport information
7Handling and storage15Regulatory information
8Exposure controls / personal protection16Other information

The two sections a salon uses under pressure are Section 4 (first aid) and Section 8 (exposure controls and PPE). Section 7 tells you how the product must be stored, which is where the SDS meets New York's own rules.

4. New York Chemical Storage, Mixing and Labelling

19 NYCRR § 160.25 — Chemical storage and SDS

  • (a) Any chemicals used in the conduct of appearance enhancement shall be mixed only in a dispensing area which has adequate ventilation. Mixing lightener at the styling chair is a violation, not merely poor practice.
  • (b) Flammable and combustible chemicals shall be stored in a metal cabinet remote from potential sources of ignition, such as an open flame or an electrical device. Read this together with § 160.12's ban on candles, gas burners and cigarettes.
  • (c) All nail care chemicals must be stored in closed bottles.
  • (d) An owner shall have all Safety Data Sheets on file for inspection, maintained in written or electronic format so they are readily accessible to all employees, and shall ensure that all employees are aware of the location of, and have access to, the SDS.

19 NYCRR § 160.26 — Product labelling

  • All products used in the business must be maintained with the original manufacturer labelling intact. Decanting bleach powder into an unmarked jar breaks this rule.
  • All bottles containing poisonous or corrosive substances must be additionally and distinctly marked as such.
  • Those bottles must be stored in an area not open or available to the public.

5. Applying It at the Station

  • Never mix product outside the dispensing area. Colour, lightener, perm solution, relaxer and acrylic monomer are all mixed in the ventilated dispensary.
  • Keep original labels legible. If a label becomes damaged, replace the container or re-label it with the full manufacturer information.
  • Decant nothing into a food or drink container. This is where § 160.26 and § 160.23 reinforce each other.
  • Store acetone, alcohol-based products and aerosols in the metal cabinet, away from electrical devices, hot tools and any flame.
  • Know where the SDS binder or tablet is before you need it. In an eye splash or an inhalation incident, Section 4 gives the first-aid measures and Section 8 gives the exposure controls; both need to be reachable in seconds.
  • Dispose of chemical waste correctly. SDS Section 13 governs disposal, and hazardous salon waste may not simply be poured down a drain where local rules prohibit it.
Test Your Knowledge

How many standardised sections does a GHS-compliant Safety Data Sheet contain, and which section gives first-aid measures?

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B
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D
Test Your Knowledge

Under 19 NYCRR § 160.25, where may a New York cosmetologist mix hair lightener and developer?

A
B
C
D
Test Your Knowledge

A salon transfers acetone from a gallon jug into a small unmarked squeeze bottle kept at the manicure table. Which New York regulation does this violate?

A
B
C
D
Test Your Knowledge

Which federal agency registers the hospital-grade disinfectants that 19 NYCRR § 160.17 requires New York salons to use?

A
B
C
D