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A15240 Octamethylcyclotetrasiloxane, 98%

CAS Number
556-67-2
Synonyms

Stock No. Size Price ($) Quantity Availability
A15240-22 100g 68.70
A15240-36 500g 248.00
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Octamethylcyclotetrasiloxane, 98%

MDL
MFCD00003269
EINECS
209-136-7

Chemical Properties

Formula
C8H24O4Si4
Formula Weight
296.62
Melting point
17-18°
Boiling Point
175-176°
Flash Point
56°(132°F)
Density
0.956
Refractive Index
1.3960
Storage & Sensitivity
Moisture Sensitive. Ambient temperatures.
Solubility
Immiscible with water.

Applications

Octamethylcyclotetrasiloxane is used to prepare silicone oil, silicone rubber and silicone resin having different degrees of polymerization through ring opening and polymerizing. It is also widely used in various fields viz. construction, electronics, textile, automobile, personal care, food, and machining. It is an organometallic reagent utilized for the preparation of siloxane polymers having high surface-hydrophobicity restoration.

Notes

Incompatible with strong oxidizing agents, acids and bases.

Literature References

Useful for deactivating glass GC capillary columns.

Sigot, L.; Ducom, G.; Germain, P. Adsorption of octamethylcyclotetrasiloxane (D4) on silica gel (SG): Retention mechanism. Microporous Mesoporous Mater. 2015, 213, 118-124.

Tugui, C.; Cazacu, M.; Sacarescu, L.; Bele, A.; Stiubianu, G.; Ursu, C.; Racles, C. Full silicone interpenetrating bi-networks with different organic groups attached to the silicon atoms. Polymer 2015, 77, 312-322.

GHS Hazard and Precautionary Statements

Hazard Statements: H226-H302-H312-H360

Flammable liquid and vapour. Harmful if swallowed. Harmful in contact with skin. May damage fertility or the unborn child.

Precautionary Statements: P201-P202-P210-P233-P240-P241-P242-P243-P264b-P270-P281-P301+P312-P303+P361+P353-P308+P313-P312-P330-P363-P370+P378q-P501c

Obtain special instructions before use. Do not handle until all safety precautions have been read and understood. Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Keep container tightly closed. Ground/bond container and receiving equipment. Use explosion-proof electrical/ventilating/lighting/ equipment. Use only non-sparking tools. Take precautionary measures against static discharge. Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product. Use personal protective equipment as required. IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF exposed or concerned: Get medical advice/attention. Rinse mouth. Wash contaminated clothing before reuse. In case of fire: Use CO2, dry chemical, or foam Dispose of contents/ container to an approved waste disposal plant

Other References

Merck
14,6747
Beilstein
1787074
Hazard Class
3
Packing Group
III
Harmonized Tariff Code
2934.99
TSCA
Yes
RTECS
GZ4397000

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