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NAPHTHALENE 1,5-DIISOCYANATE
ICSC: 0653
Peer-Review Status: 26.11.1998 Validated
1,5-Diisocyanatonaphthalene
NDI 
CAS #: 3173-72-6 RTECS #: NQ9600000
EC #: 615-007-00-X
EINECS #: 221-641-4
    Formula: C12H6O2N2 / C10H6(NCO)2
Molecular mass: 210.19

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.  Use foam, powder, carbon dioxide. NO water. 
EXPLOSION      
 
EXPOSURE   PREVENT DISPERSION OF DUST! STRICT HYGIENE!   
Inhalation Cough. Laboured breathing. Sore throat.  Use 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.  Wear 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 refer for medical attention. 
Ingestion Abdominal pain. Sore throat.  Do not eat, drink, or smoke during work.  Rinse mouth. Give one or two glasses of water to drink. Rest. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Sweep spilled substance into covered sealable containers. Carefully collect remainder. Then store and dispose of according to local regulations. Do NOT let this chemical enter the environment. Personal protection: particulate filter respirator adapted to the airborne concentration of the substance.  Do not transport with food and feedstuffs. 
EC Classification
Symbol: Xn; R: 20-36/37/38-42-52/53; S: (2)-26-28-38-45-61 
UN Classification
 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
  See Chemical Dangers. Well closed. 

IMPORTANT DATA
Physical State; Appearance
WHITE-TO-LIGHT-YELLOW CRYSTALS. 

Physical dangers
 

Chemical dangers
Decomposes on heating. This produces toxic fumes of nitrogen oxides, carbon monoxide, isocyanates and hydrogen cyanide. Reacts with acids, alcohols, amines, bases, strong oxidants, strong reducing agents and water. 

Occupational exposure limits
TLV (NOT-ESTABLISHED):.
MAK: Carcinogen category: 3B; Sensitization of respiratory tract (SA); (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 20°C 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 is irritating to the eyes, skin and respiratory tract. 

Effects of long-term or repeated exposure
Repeated or prolonged inhalation may cause asthma. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point at 0.7kPa: 167°C
Melting point: 130°C
Relative density (water = 1): 1.42
Vapour pressure, Pa at 20°C: <0.001
Flash point: 192°C c.c. 
The substance is harmful to aquatic organisms. 

NOTES
Reacts violently with fire extinguishing agents such as water (above 50°C).
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
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    See Also:
       Toxicological Abbreviations