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OCTAMETHYLCYCLOTETRASILOXANE

ICSC: 0310

Cyclotetrasiloxane, octamethyl-
C8H24O4Si4
Molecular mass: 296.6
ICSC # 0310 		CAS # 556-67-2
RTECS # GZ4397000
EC # 014-018-00-1
September 10, 2002 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Flammable.
NO open flames.
Powder, alcohol-resistant foam, water in large amounts, carbon dioxide.
EXPLOSION


EXPOSURE
PREVENT GENERATION OF MISTS!

•INHALATION
Ventilation.
Fresh air, rest.
•SKIN
Protective gloves.
Remove contaminated clothes. Rinse and then wash skin with water and soap.
•EYES
Safety spectacles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION Nausea. Vomiting.
Do not eat, drink, or smoke during work.
Rinse mouth. Do NOT induce vomiting. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Collect leaking liquid in covered containers.


Xn symbol
R: 53-62
S: 2-36/37-46-51-61
ICSC: 0310 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

OCTAMETHYLCYCLOTETRASILOXANE

ICSC: 0310

I

M

P

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T

A

N

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D

A

T

A

PHYSICAL STATE; APPEARANCE:
OILY COLOURLESS LIQUID.

PHYSICAL DANGERS:


CHEMICAL DANGERS:


OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its vapour, through the skin and by ingestion.

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:


EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL
PROPERTIES

Boiling point: 175°C
Melting point: 17.5°C
Relative density (water = 1): 0.96
Solubility in water: none
Vapour pressure, Pa at 21.7°C: 133.3
Flash point: 56°C

ENVIRONMENTAL
DATA


N O T E S

ADDITIONAL INFORMATION



ICSC: 0310 OCTAMETHYLCYCLOTETRASILOXANE
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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