NAME: Methylal

SYNONYM(s): Methyl formal; Formal; Dimethylacetal formaldehyde; Dimethoxymethane

IMIS: 1655

CAS: 109-87-5

NIOSH: RTECS PA8750000; 47896

DOT: UN1234 Flammable Liquid

DESCRIPTION:

Colorless liquid with a pungent odor.
MW: 76
BP: 111 F
VP: 330 mm
MP: -157 F

INCOM: Strong oxidizers, acids

OSHA GENERAL INDUSTRY PEL: 1000 ppm, 3100 mg/m3

OSHA CONSTRUCTION INDUSTRY PEL: 1000 ppm, 3100 mg/m3 TWA

ACGIH TLV: 1000 ppm, 3110 mg/m3 TWA

NIOSH REL: 1000 ppm TWA

SYMPTOM(s): Mild eye, upper respiratory irritation; anesthesia; skin irritation

HEALTH EFFECTS: Cumulative systemic toxicity (HE3) Irritation-Eyes, Nose, Throat---Moderate (HE15) HISTORY M187 lab, 3/82

ORGAN: Skin, respiratory system, CNS

PRIMARY SAMPLING/ANALYTICAL METHOD (SLC1):

MEDIA: Charcoal Tube (100/50 mg sections, 20/40 mesh)
ANL SOLVENT: Hexane
MAX V: 2.0 Liters   MAX F: 0.2 L/min
ANL 1: Gas Chromatography; GC/FID
REF: 1 (NIOSH 1611)
SAE: 0.10
CLASS: Fully Validated

SECONDARY SAMPLING/ANALYTICAL METHOD (SAM2):

DEVICE: Instrumentation COMPANY: Infrared Spectrophotometer
PART #: MIRAN 1A & 1B RANGE: 0.1 ppm @ 9.5 um
CLASS: Mfg