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NAPHTHALENE 1,5-DIISOCYANATE ICSC: 0653
Date of Peer Review: November 1998

1,5-Diisocyanatonaphthalene
NDI
CAS # 3173-72-6 C12H6O2N2 / C10H6(NCO)2
RTECS # NQ9600000 Molecular mass: 210.19
UN #
EC Index # 615-007-00-X
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames.
Foam, powder, carbon dioxide. NO water.
EXPLOSION


EXPOSURE
PREVENT DISPERSION OF DUST! STRICT HYGIENE!

Inhalation Cough. Laboured breathing. Sore throat.
Local exhaust or breathing protection.
Fresh air, rest. Refer for medical attention.
Skin Redness. Pain.
Protective gloves.
Remove contaminated clothes. Rinse skin with plenty of water or shower.
Eyes Redness. Pain.
Safety spectacles or eye protection in combination with breathing protection if powder.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion Abdominal pain. Sore throat.
Do not eat, drink, or smoke during work.
Rinse mouth. Give plenty of water to drink. Rest. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Sweep spilled substance into sealable containers. Carefully collect remainder, then remove to safe place. Do NOT let this chemical enter the environment. Personal protection: P2 filter respirator for harmful particles.
Do not transport with food and feedstuffs.
EU Classification
Symbol: Xn
R: 20-36/37/38-42-52/53
S: (2-)-26-28-38-45-61
UN Classification

EMERGENCY RESPONSE STORAGE

See Chemical Dangers. Well closed.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2005

SEE IMPORTANT INFORMATION ON BACK
NAPHTHALENE 1,5-DIISOCYANATE ICSC: 0653
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
WHITE TO LIGHT YELLOW CRYSTALS

CHEMICAL DANGERS:
The substance decomposes on heating producing toxic fumes (nitrogen oxides, carbon monoxide, isocyanate vapours, traces of hydrogen cyanide). Reacts with acids, alcohols, amines, bases, strong oxidants, strong reducing agents, water.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.
MAK: sensitization of respiratory tract (Sa); Carcinogen category: 3B; (DFG 2005).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.

INHALATION RISK:
Evaporation at 20C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed, especially if powdered.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance irritates the eyes, the skin and the respiratory tract.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged inhalation exposure may cause asthma.
PHYSICAL PROPERTIES
Boiling point at 0.7kPa: 167C
Melting point: 130C
Relative density (water = 1): 1.42
Vapour pressure, Pa at 20C: < 0.001
Flash point: 192C c.c.
ENVIRONMENTAL DATA
The substance is harmful to aquatic organisms.
NOTES
Reacts violently with fire extinguishing agents such as water (above 50C). The symptoms of asthma often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential. Anyone who has shown symptoms of asthma due to this substance should avoid all further contact. Do NOT take working clothes home. Card has been partly updated in October 2005. See sections Occupational Exposure Limits, EU classification.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 2005