ICSC 1548 - DECAHYDRONAPHTHALENE (cis/trans isomer mixture)

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DECAHYDRONAPHTHALENE (cis/trans isomer mixture)

ICSC: 1548
_{October 2004}

Decalin
Perhydronaphthalene
Decahydronaphthalin
Bicyclo(4.4.0)decane

CAS No: 91-17-8
RTECS No: QJ3150000
UN No: 1147

C₁₀H₁₈
Molecular mass: 138.25

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Flammable.	NO open flames, NO sparks, and NO smoking.	Powder, carbon dioxide, foam.
EXPLOSION	Above 57°C explosive vapour/air mixtures may be formed.	Above 57°C use a closed system, ventilation, and explosion-proof electrical equipment. Prevent build-up of electrostatic charges (e.g., by grounding).	In case of fire: keep drums, etc., cool by spraying with water.

EXPOSURE		PREVENT GENERATION OF MISTS!
Inhalation	Cough. Sore throat. Headache. Dizziness. Nausea. Vomiting.	Ventilation, local exhaust, or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin	Redness. Pain. Skin burns.	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
Eyes	Redness. Pain. Severe deep burns.	Face shield, or eye protection in combination with breathing protection.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion	Nausea. Vomiting. Abdominal pain. (Further see Inhalation).	Do not eat, drink, or smoke during work.	Rinse mouth. Do NOT induce vomiting. Give plenty of water to drink. Refer for medical attention.

SPILLAGE DISPOSAL	PACKAGING & LABELLING
Ventilation. Collect leaking liquid in sealable containers. Carefully collect remainder, then remove to safe place. Personal protection: chemical protection suit including self-contained breathing apparatus. Do NOT let this chemical enter the environment.	UN Hazard Class: 3 UN Pack Group: III

EMERGENCY RESPONSE	SAFE STORAGE
Transport Emergency Card: TEC (R)-30GF1-III NFPA Code: H2; F2; R0	Fireproof. Separated from oxidants. Cool. Keep in the dark. Well closed to reduce the rate of peroxide formation.

IMPORTANT DATA

Physical State; Appearance
COLOURLESS LIQUID, WITH CHARACTERISTIC ODOUR.

Physical dangers
As a result of flow, agitation, etc., electrostatic charges can be generated.

Chemical dangers
The substance can form explosive peroxides. On combustion, forms toxic gases. Reacts with oxidants.

Occupational exposure limits
TLV not established.
MAK not established.

Routes of exposure
The substance can be absorbed into the body by inhalation of its vapour.

Inhalation risk
No indication can be given about the rate in which a harmful concentration in the air is reached on evaporation of this substance at 20°C.

Effects of short-term exposure
The substance is corrosive to the skin and the eyes. The vapour is irritating to the respiratory tract. The substance may cause effects on the central nervous system. If this liquid is swallowed, aspiration into the lungs may result in chemical pneumonitis.

Effects of long-term or repeated exposure
Repeated or prolonged contact with skin may cause dermatitis.

PHYSICAL PROPERTIES

ENVIRONMENTAL DATA

Boiling point: 185-195°C
Melting point: -40°C
Relative density (water = 1): 0.87 - 0.90
Solubility in water, g/100 ml at 25°C: very poor
Vapour pressure, Pa at 20°C: 127
Relative vapour density (air = 1): 4.8
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01
Flash point: 57°C c.c.
Auto-ignition temperature: 255°C
Explosive limits, vol% in air: 0.7-5.4
Octanol/water partition coefficient as log Pow: 4.6

The substance is toxic to aquatic organisms. The substance may cause long-term effects in the aquatic environment. Bioaccumulation of this chemical may occur in fish.

NOTES

Other melting points: cis-Decahydronaphthalene: -43°C, trans-Decahydronaphthalene: -30°C. Other boiling points: cis-Decahydronaphthalene: 195°C, trans-Decahydronaphthalene: 187°C.
Check for peroxides prior to distillation; eliminate if found.

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

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.

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