Chemical Name: 4,4'-methylene-bis-(ortho-chloroaniline) (MOCA)
CAS No.: 101-14-4
SPECIFICATIONS
| Appearance | Pale yellow granular pellet |
| Melting range | 98 -- 102 |
| Moisture % | < 0.30 |
PHYSICAL PROPERTIES
| Bulk density (24) / g/cm3 | 1.44 |
| Liquid density (107) / g/ml | 1.26 |
| Amine value / mmol/g | 7.4-7.6 |
| Free Aniline % | < 1.00 |
| Color (Gardner) | < 4 |
| Acetone insoluble matter % | <0.04 |
| Water absorption tendency | None |
| Storage stability | Stable, decomposes above 200 |
SOLUBILITY
Very soluble in Acetone, DMF, DMSO, MEK and THF.
Soluble in Ethanol, Toluene and Benzene.
Insoluble in water.
APPLICATIONS
Curing agent for polyurethane elastomers and cast polyurethanes.
Curing agent for epoxy or epoxy urethane resin.
FORMULATIONS
MOCA-HR is usually used to cure prepolymers that are produced from
TDI reacted with polyether or polyester polyol. The prepolymer
normally contains NCO of 4.2 - 4.3 %. Pot life is usually 8 - 10
minutes.
MOCA-HR will show a significant reduction in properties if heated
for long periods of time at temperatures in excess of 121.
TOXICITY
LD50 (Rats) 5000mg/kg.
OSHA PEL 0.02ppm (8-hour TWA), ACGIH TLV 0.01ppm.
MOCA has been classified as a carcinogen since 1973, based upon
test results with laboratory animals. In 1992, ACGIH, after
reviewing existing information, continued the classification of
MBOCA as a "Suspect Human Carcinogen".
STORAGE
MOCA-HR should be stored in a dry location.
PACKAGING
Net 50-kg carton drum with polyethylene liner.
