NAME: Dimethylamine
SYNONYM(s): Dimethylamine, anhydrous
IMIS: 0928
CAS: 124-40-3
NIOSH: RTECS IP8750000; 31609
DOT: UN1032 Flammable Gas (Anhydrous); UN1160 Flammable Liquid (Solution)
DESCRIPTION:
Colorless liquid or gas with a pungent, fishy, or ammonia-like odor.
MW: 45
BP: 44 F
VP: 1.7 atm
MP: -134 F
INCOM: Strong oxidizers, chlorine, mercury
Exposure Limits
OSHA GENERAL INDUSTRY PEL: 10 ppm, 18 mg/m3
OSHA CONSTRUCTION INDUSTRY PEL: 10 ppm, 18 mg/m3 TWA
ACGIH TLV: 5 ppm, 9.2 mg/m3 TWA; 15 ppm, 27.6 mg/m3 STEL; Appendix A4 (Not Classifiable as a Human Carcinogen)
NIOSH REL: 10 ppm TWA
Health Factors
SYMPTOM(s): Nose, throat irritation; sneezing, coughing, dyspnea; pulmonary edema; conjunctivitis; burns skin, mucous membranes; dermatitis
HEALTH EFFECTS: Irritation-Eye, Nose, Throat, Skin---Marked (HE14) Cumulative liver, testicular damage (HE3)
ORGAN: Respiratory system, skin, eyes
NIOSH/OSHA/DOE Health Guideline
Monitoring
PRIMARY SAMPLING/ANALYTICAL METHOD (SLC1):
MEDIA: Coated XAD-7 Tube (80/40 mg sections, 20/50 mesh); Coating is 10% (w/w) NBD-Chloride.
ANL SOLVENT: Tetrahydrofuran
MAX V: 10 Liters MAX F: 0.2 L/min
ANL 1: High Performance Liquid Chromatography; HPLC/FLU/VIS
REF: 2 (OSHA 34)
SAE: 0.09
CLASS: Fully Validated
NOTE: OSHA personnel may obtain sampling tubes from SLTC.
COND: Column: Radial CN Mobile Phase:80:20 Isooctane:Water Detector Wavelength: 465 EX: 525 EM (Fluor) Detection Limit: 2.8 ng/inj
SECONDARY SAMPLING/ANALYTICAL METHOD (SAM2):
DEVICE: Detector Tube COMPANY: Gastec
PART #: 180 RANGE: 1-60 ppm
CLASS: Mfg
DEVICE: Detector Tube COMPANY: MSA
PART #: 92115 RANGE: 5-100 ppm
CLASS: Mfg
DEVICE: Instrumentation COMPANY: Infrared Spectrophotometer
PART #: MIRAN 1A & 1B RANGE: 1.2 ppm @ 8.8 um
CLASS: Mfg
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