ICSC 0653 - NAPHTHALENE 1,5-DIISOCYANATE

[List of Chemicals] [Risk Notes] [Risk Phrases] [Safety Phrases] [Danger Symbols]

NAPHTHALENE 1,5-DIISOCYANATE

ICSC: 0653
_{November 1998}

1,5-Diisocyanatonaphthalene
NDI

CAS No: 3173-72-6
RTECS No: NQ9600000
EC No: 615-007-00-X

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.	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.	Xn Symbol R: 20-36/37/38-42-52/53 S: (2-)26-28-38-45-61	Do not transport with food and feedstuffs.

EMERGENCY RESPONSE	SAFE STORAGE
	See Chemical Dangers. Well closed.

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 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 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	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.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004

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