6.1 Safety Data Sheets and Chemical Storage

6.1 Safety Data Sheets and Chemical Storage

Chemicals are not a side topic in Washington manicuring. They are the job. Acrylic liquid, gel, acetone, primer, cyanoacrylate glue, and callus reducers all sit inside WAC 308-20-110(4) chemical use and storage, and they sit next to the prohibited-substance rule in WAC 308-20-110(15). NIC Domain 1 safety items and the Washington overlay are testing the same floor skill: can you keep product from injuring a client's person or clothing, and can you store it so the shop does not become a fire, explosion, or injury scene.

Follow the manufacturer or the SDS

WAC 308-20-110(4)(a) is the service rule. When you administer a service that uses chemicals or chemical compounds, you must follow safety procedures according to manufacturer's directions or safety data sheets (SDSs) to prevent injury to the client's person or clothing. The exam will not accept "I have been mixing this way for years" as a substitute. If the label says do not apply acid primer to living skin, you do not paint it on the eponychium because the client wanted extra stick. If the SDS says the product is a flammable liquid, you do not warm the bottle on a space heater. If the manufacturer says do not use 100% liquid methyl methacrylate (MMA) monomer, Washington already banned that product anyway.

Injury to person includes chemical burns, sensitization, eye splash, and nail-plate damage. Injury to clothing includes acetone on a silk blouse, monomer on a wool coat, and primer that etches a watch band. Drape, close containers, and work over the table, not over the client's lap.

SDS in the immediate working area

WAC 308-20-110(4)(b) names every location type that practices under this chapter: salon shops, personal service, mobile units and schools shall have in the immediate working area access to all safety data sheets (SDSs) provided by manufacturers for any chemical products used. Immediate working area is not the owner's house, not a search you hope will load during an inspection, and not a binder in a locked office two floors down. A Kent booth renter, a Tacoma school clinic, a Spokane mobile unit parked at a placebound client's driveway, and a personal-services manicurist working in a Bellevue home office all need SDS access where the chemical is actually used.

Paper in a labeled binder at the station is one lawful way. A tablet or laptop that stays in the suite with a saved folder of the actual manufacturer SDS files can also work if you can open the correct sheet without leaving the working area. "I can look it up if the inspector waits" is not access. If you add a new gel brand on Tuesday, that brand's SDS belongs in the same immediate set before you use the bottle on a client.

How a Washington manicurist uses a GHS SDS

Modern SDS documents follow the Globally Harmonized System (GHS) 16-section format. You are not taking a chemistry-lab final. You are learning which sections answer table questions in the 90 seconds after a splash or a fire scare.

Other GHS sections (composition, accidental release, stability, ecology, transport, regulatory, other information) exist. Use them when a spill, a delivery, or a city hazardous-waste question requires them. Do not memorize section numbers as trivia; memorize the habit: identify, hazard, first aid, fire, storage, exposure, properties, toxicology, disposal.

Dispensing sink, labels, and mixing

WAC 308-20-110(1)(a) is plumbing with a safety purpose. All locations where chemical services are provided to clients must have a dispensing sink with hot and cold running water. The sink is for mixing chemicals and for disinfecting supplies, tools, equipment, and other materials. It must be labeled "not for public use." A client restroom sink is not a dispensing sink. A pedicure basin is not a dispensing sink. Mixing monomer in a coffee mug at an Everett reception desk is not mixing at the dispensing sink.

WAC 308-20-110(1)(g)–(h) keep liquids in clean closed containers and require bottles to be distinctly and correctly labeled to disclose contents. Poisonous substances must be additionally and distinctly marked as such. An unlabeled squeeze bottle of "the clear stuff" fails even if you personally remember it is acetone. Clients cannot read your memory, and neither can an inspector.

Storage that prevents fire, explosion, and harm

The rest of subsection (4) is a storage exam:

• (c) Flammable chemicals must be stored away from potential sources of ignition. Acetone, isopropyl alcohol, and many acrylic liquids are flammable. Ignition sources include open flame, a lit candle at the table, a space heater, a smoking area, a sparking motor, and a UV/LED lamp used as a makeshift bottle warmer. Close the acetone jar. Do not store bulk acetone on a hot water heater.
• (d) Chemicals which could interact in a hazardous manner such as oxidizers, catalysts, and solvents, must be stored per manufacturer's instruction. Nail chemistry still uses this trio. Peroxide-type oxidizers, catalyst systems in some wrap or gel chemistries, and solvents such as acetone do not all belong in one milk crate "because they are nail products."
• (e) Store chemicals so as to prevent fire, explosion, or bodily harm, and in accordance with the manufacturer's directions. Tight lids, upright bottles, secondary containment for bulk solvent, and out-of-reach of children in a personal-services setting are the practical reading.

WAC 308-20-110(5)(b) then requires chemical, flammable, toxic, or otherwise harmful waste to be disposed of in the manner required by local hazardous waste management regulations. King County and other local programs publish nail-salon waste guidance. Pouring leftover monomer down the Tacoma salon sink is not a disposal method those programs teach.

The bottles on a Washington nail table

Learn the common products as safety objects, not as brand names.

• Acetone is a flammable solvent used to remove polish and to soak enhancements. Keep it closed. Store away from ignition. Do not use it as a room deodorizer.
• Ethyl methacrylate (EMA) monomer is the common professional acrylic liquid. It is still a sensitizer and a vapor source. It is not the banned MMA bottle.
• 100% liquid MMA monomer is prohibited under WAC 308-20-110(15). MMA bonds aggressively, is hard to remove, and is associated with nail damage and sensitization. A cheap "never break" monomer from a marketplace seller is not legalized by a posted SDS.
• Methylene chloride products are also prohibited. Do not keep a banned remover because it works faster.
• Acid primers often contain methacrylic acid. They can chemically burn living skin and damage clothing. Use a tiny amount on the nail plate only.
• Non-acid (acid-free) primers are typically bonding agents without that acid; they can still irritate and still require SDS access.
• Cyanoacrylate is nail glue and wrap resin. It can bond skin instantly, irritate eyes and lungs, and trigger allergy. Do not use it around the eye area. Follow the SDS if skin is bonded.
• UV/LED gels contain acrylates and photoinitiators. Uncured gel on skin is a classic sensitization route. Cure as directed; do not treat leftover gel as harmless lotion.
• Acrylic liquids and powders belong in closed, labeled containers. Mix at the dispensing area with the ratio you were trained to use, not as an open dish that sits all day.
• Callus reducers are often alpha-hydroxy acids. They are cosmetic, not a medical treatment, and they can burn if left on too long or used on broken skin. They do not authorize a razor-edged callus tool, which WAC 308-20-110(16) already bans.

WAC 308-20-110(15) in full exam form: no establishment or school may have on the premises cosmetic products containing hazardous substances banned by the FDA for use in cosmetic products. Use of 100% liquid methyl methacrylate monomer and methylene chloride products is prohibited. No product may be used in a manner the FDA disapproves. Possession on the premises is already a problem. Using a lawful product off-label is also a problem.

Floor scenarios

Seattle suite. A booth renter keeps SDS PDFs on a phone in a coat pocket in the break room. The working area is the suite. Move the files onto a device that stays in the suite, or print the sheets.

Yakima ignition. A winter space heater sits under the manicure table next to a gallon of acetone. That is a subsection (4)(c) failure waiting for a spark.

Vancouver, WA school. Students mix acrylic at a labeled dispensing sink. Clients are told the sink is not for public use. That is WAC 308-20-110(1)(a) done correctly.

Olympia leftover. A manicurist is offered a "stronger" monomer. If it is 100% liquid MMA, it cannot be used and it cannot live on the premises. Send it back.

Keep one sentence in your head for the exam: directions or SDS to protect the client, SDS in the immediate working area, flammables away from ignition, incompatible chemicals stored as the manufacturer says, and no banned MMA or methylene chloride in the building.