NAME: Methylene-bis(4-Cyclohexylisocyanate)
SYNONYM(s): Hydrogenated MDI; Dicylohexylmethane-4,4'-diisocyanate; HMDI; Desmodur W
IMIS: 2651
CAS: 5124-30-1
NIOSH: RTECS NQ9250000; 44209
DOT: UN3080 Poison, Flammable
DESCRIPTION:
Solid
MOLFM: C15H22N2O2
Exposure Limits
ACGIH TLV: 0.005 ppm, 0.054 mg/m3 TWA
NIOSH REL: 0.01 ppm ceiling
Health Factors
HEALTH EFFECTS: Irritation-Skin---Marked (HE14) Skin sensitization (HE3); Asthma (HE9)
NIOSH/OSHA/DOE Health Guideline
Monitoring
PRIMARY SAMPLING/ANALYTICAL METHOD (SLC1):
MEDIA: Coated Glass Fiber Filter (37 mm open face) Coated with 1.0 mg 1-(2-Pyridyl)piperazine
ANL SOLVENT: 90/10 (v/v) Acetonitrile/Dimethylsulfoxide
MIN T: 15 Minutes MAX F: 1.0 L/min (Ceiling)
ANL 1: High Performance Liquid Chromatography; HPLC/UV/FLU
REF: 2 (OSHA PV2092)
CLASS: Partially Validated
NOTE: OSHA personnel may obtain coated filters from SLTC. Refrigerate coated filters and protect from light until used.
COND: Column: Mobile Phase: Detector Wavelength: Detection Limit:
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