NAME: Difluorodibromomethane

SYNONYM(s): Dibromodifluoro-methane; Freon 12B2

IMIS: 0922

CAS: 75-61-6

NIOSH: RTECS PA7525000; 47878

DOT: 1941 58

DESCRIPTION:

Colorless liquid or gas with a characteristic odor.
MW: 210
BP: 76 F
VP: 620 mm
MP: -233 F

INCOM: Chemically active metals: sodium, potassium, calcium, powdered aluminum, zinc, magnesium

OSHA GENERAL INDUSTRY PEL: 100 ppm, 860 mg/m3

OSHA CONSTRUCTION INDUSTRY PEL: 100 ppm, 860 mg/m3 TWA

ACGIH TLV: 100 ppm, 858 mg/m3 TWA

NIOSH REL: 100 ppm TWA

SYMPTOM(s): In animals: respiratory system irritation; CNS symptoms; liver damage

HEALTH EFFECTS: Irritation-Eye, Nose, Throat, Skin---Mild (HE16) Cumulative liver damage (HE3) Narcosis (HE8)

ORGAN: Respiratory system

PRIMARY SAMPLING/ANALYTICAL METHOD (SLC1):

MEDIA: Two Charcoal Tubes (100/50 mg sections, 20/40 mesh) in series
ANL SOLVENT: Isopropanol
MAX V: 10 Liters   MAX F: 0.2 L/min
ANL 1: Gas Chromatography; GC/FID
REF: 1 (NIOSH 1012)
SAE: 0.15
CLASS: Fully Validated

SECONDARY SAMPLING/ANALYTICAL METHOD (SAM2):

MIRAN 1A & 1B: MIN. Det. Con. 0.04 ppm at 9.2 um