International Chemical Safety Cards

OCTAMETHYLCYCLOTETRASILOXANE

ICSC: 0310

Octamethylcyclotetrasiloxane
C₈H₂₄O₄Si₄
Molecular mass: 296.6
CAS # 556-67-2
RTECS # GZ4397000
ICSC # 0310

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	Redness.	Protective gloves.	Remove contaminated clothes. Rinse and then wash skin with water and soap.
EYES	Redness. Pain.	Safety spectacles.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
INGESTION		Do not eat, drink, or smoke during work.	Rinse mouth.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Collect leaking liquid in covered containers.

SEE IMPORTANT INFORMATION ON BACK

ICSC: 0310

Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards

OCTAMETHYLCYCLOTETRASILOXANE

ICSC: 0310

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A

PHYSICAL STATE; APPEARANCE:
OILY COLOURLESS LIQUID.

PHYSICAL DANGERS:

CHEMICAL DANGERS:

OCCUPATIONAL EXPOSURE LIMITS (OELs):
TLV not established.

ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol.

INHALATION RISK:

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

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 20°C: 100
Flash point: 56°C

ENVIRONMENTAL
DATA

N O T E S

Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken.

ADDITIONAL INFORMATION

ICSC: 0310	OCTAMETHYLCYCLOTETRASILOXANE
© IPCS, CEC, 1993

IMPORTANT LEGAL NOTICE:

Neither the CEC or 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. 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.