PRODUCT IDENTIFICATION
H.S. CODE
CLASSIFICATION
EXTRA NOTES
UN2481 [Flammable liquid
PHYSICAL AND CHEMICAL PROPERTIES
AUTOIGNITION
NFPA RATINGS
REFRACTIVE INDEX
EXTERNAL LINKS & GENERAL DESCRIPTION
Wikipedia Linking - Isocyanate
PubChem Compound Summary - Ethyl isocyanate
KEGG (Kyoto Encyclopedia of Genes and Genomes) - Ethyl isocyanate
http://www.ebi.ac.uk/ - Ethyl isocyanate
http://www.ncbi.nlm.nih.gov/ - Ethyl isocyanate
http://www.cdc.gov/Isocyanates are a family of highly reactive, low molecular weight chemicals. They are widely used in the manufacture of flexible and rigid foams, fibers, coatings such as paints and varnishes, and elastomers, and are increasingly used in the automobile industry, autobody repair, and building insulation materials. Spray-on polyurethane products containing isocyanates have been developed for a wide range of retail, commercial, and industrial uses to protect cement, wood, fiberglass, steel and aluminum, including protective coatings for truck beds, trailers, boats, foundations, and decks.
Local:
Cyanic acid
(the isomer of fulminic acid) is an unstable (explosive), poisonous, volatile,
clear liquid with the structure of H-O-C≡N (the oxoacid formed from the
pseudohalogen cyanide), which is readily converted to
cyamelide and fulminic
acid. There is another isomeric cyanic acid with the
structure of H-N=C=O, called isocyanic acid. Cyanate group (and isocyanate group) can react with itself.
Cyanuric acid (also called pyrolithic acid), white monoclinic crystal with
the structure of [HOC(NCOH)2N], is the trimer
of cyanic acid. The
trimer
of isocyanic acid
is called biuret.
- Cyanic acid: H-N=C=O or H-O-C≡N
- Fulminic acid: (H-C=N-O) or H-C≡N-O
- Isocyanic acid: H-N=C=O
- Cyanuric acid: HOC(NCOH)2N
- Biuret: (NH2)CO)2 NH
Cyanic acid hydrolyses to ammonia and carbon dioxide in water. The salts and esters of cyanic acid are cyanates. But esters of normal cyanic acid are not known. The salts and esters of isocyanic acid are isocyanates. The isocyanate group reacts with the hydroxyl functional group to form a urethane linkage. Diisocyanates (or polyisocyanates) are monomers for polyurethane production. Polyurethane is made from a variety of diisocyanates in conjunction with polyether and polyester polyols as co-reactants by addition polymerization which needs at least two -N=C=O groups. Polyurethanes are widely used in the manufacture of flexible and rigid foams, fibres, coatings, and elastomers. If isocyanate monomer is polymerized with amine group, polyurea is produced. Cyanates (or Isocyanates) are readily reacts with various form of amine (including ammonia, primary-, secondary-amines, amides and ureas) and hydroxyl functional group. They are used in the synthesis for the target molecules such as pharmaceuticals, pesticides, textile softener, lubricants and industrial disinfectants. They can convert to polycyclic compounds such as hydantoins and imidazolons. They are used as plastic additives and as heat treatment salt formulations for metals.
APPEARANCE
HAZARD OVERVIEW
Flammable liquid, Toxic by ingestion, Respiratory sensitiser, Irritant, lachrymator.
GHS
Danger
PICTOGRAMS
HAZARD STATEMENTS
H225-H301-H312 + H332-H315-H319-H334-H335
P STATEMENTS
P210-P261-P280-P301 + P310-P305 + P351 + P338-P342 + P311
RISK PHRASES
11-20/21-25-36/37/38-42
SAFETY PHRASES
16-26-36/37/39-45