PRODUCT IDENTIFICATION

H.S. CODE

CLASSIFICATION

EXTRA NOTES

UN2487 [Poison]

PHYSICAL AND CHEMICAL PROPERTIES

Decomposes in alcohol Soluble in ether

AUTOIGNITION

NFPA RATINGS

REFRACTIVE INDEX

EXTERNAL LINKS & GENERAL DESCRIPTION

Wikipedia Linking

Google Scholar Search

Drug Information Portal (U.S. National Library of Medicine) - Phenylisocyanate

PubChem Compound Summary - Phenylisocyanate

ACUTE EXPOSURE GUIDELINE LEVELS (AEGLs) -  Phenylisocyanate

Drug Bank -  Phenylisocyanate

KEGG (Kyoto Encyclopedia of Genes and Genomes) -  Phenylisocyanate

http://www.ebi.ac.uk/ -  Phenylisocyanate

http://www.ncbi.nlm.nih.gov/ -  Phenylisocyanate

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 and vapor. Causes skin irritation. May cause allergic respiratory reaction. Water-reactive. Lachrymator (substance which increases the flow of tears). May be harmful if swallowed. Causes severe eye irritation. Causes digestive and respiratory tract irritation. May be fatal if inhaled. Target Organs: Lungs.

GHS

Danger

PICTOGRAMS

HAZARD STATEMENTS

H226-H302-H314-H317-H330-H334

P STATEMENTS

P260-P280-P284-P305 + P351 + P338-P310

RISK PHRASES

10-22-26-34-42-52

SAFETY PHRASES

16-26-28-36/37/39-45