MEK Technical Data Sheet | The Aviation Point

Designation

Item	Value
Solvent	MEK
Flash point (NIOSH)	16 F (-9 C)
Typical use	Coating wipe test, thinning, cleaning
Watch for	Not on nitrocellulose; not in confined spaces (AC 6-90a(14))

Flash points: CDC NIOSH Pocket Guide, Fahrenheit as published; Celsius converted. Always the SDS of your product first.

No procedures. The SRM and AMM name the cleaner for each task.
No grade numbers. The sources do not give solvent specification numbers for shop use.
Flash points are NIOSH values in US units; the SDS of your product may differ.

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FAA AC 43.13-1B CHG 1, Chapter 6 (corrosion control, safety precautions, finishes) — Pars. 6-90 (safety precautions), 6-134 to 6-136 (finish, conversion coat, 48 hour rule, fasteners), section 4 (corrosion preventive maintenance, MIL-C-16173 Grade 4); par. 5-63 (cleaner types).
FAA-H-8083-31B, Aviation Maintenance Technician Handbook - Airframe, Volume 1 — Chapter 8, aircraft finishes: finishing materials (acetone, alcohol, MEK) and the solvent test for coatings; chapter 7, sealing of bolted composite repairs.
CDC NIOSH Pocket Guide to Chemical Hazards: 2-Butanone (MEK) — Flash point, exposure limits and flammability class.
CDC NIOSH Pocket Guide to Chemical Hazards: Acetone — Flash point, exposure limits and flammability class.
CDC NIOSH Pocket Guide to Chemical Hazards: Isopropyl alcohol — Flash point, exposure limits and flammability class.
Environment and Climate Change Canada: 1,1,1-Trichloroethane — Montreal Protocol phase-out of methyl chloroform (consumption ended by 1 January 1996 in developed countries).
US Clean Air Act, section 604 (archived EPA text) — Phase-out schedule for class I ozone-depleting substances, including methyl chloroform.
PPG Aerospace, Desoprime HS CA7233 Military Epoxy Primer, Technical Data Sheet — MIL-PRF-23377 Type I Class C2, mix ratio, induction, pot life, film thickness, dry times, VOC, flash point, shelf life.