1,1,3,3-Tetramethyldisiloxane | CAS No. 3277-26-7

Q: What is 1,1,3,3-Tetramethyldisiloxane (CAS: 3277-26-7)?

1,1,3,3-Tetramethyldisiloxane (CAS: 3277-26-7) is a cyclic siloxane compound with the chemical formula (CH3)2SiO-Si(CH3)2. It is a colorless, non-volatile liquid with low surface tension, high thermal stability, and inert chemical properties. Commonly used as a solvent and in silicone-based formulations, it is valued for its low reactivity and compatibility with various materials.

Q: What are the main uses of 1,1,3,3-Tetramethyldisiloxane (CAS: 3277-26-7)?

1,1,3,3-Tetramethyldisiloxane (CAS: 3277-26-7) is widely used in pharmaceuticals as a solvent, in industrial applications for coatings and sealants, and in food processing as an emulsifier. It also serves as a key component in silicone production, personal care products, and research for synthesizing other silicon compounds. Its versatility makes it valuable in multiple sectors.

Q: Is 1,1,3,3-Tetramethyldisiloxane (CAS: 3277-26-7) safe?

1,1,3,3-Tetramethyldisiloxane (CAS: 3277-26-7) is generally considered safe with proper handling. It has low toxicity and is non-flammable, but skin contact or inhalation should be avoided. Safety precautions include using gloves, ensuring adequate ventilation, and following OSHA guidelines. It is approved for use in food and pharmaceutical applications under strict regulatory standards.

Q: How should 1,1,3,3-Tetramethyldisiloxane (CAS: 3277-26-7) be stored?

1,1,3,3-Tetramethyldisiloxane (CAS: 3277-26-7) should be stored in a cool, dry place at temperatures below 25°C. Keep it in sealed, airtight containers away from light and moisture to maintain stability. Avoid exposure to heat sources and ensure storage in well-ventilated areas to prevent potential vapor accumulation.

1,1,3,3-Tetramethyldisiloxane

Basic Information

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CAS Number

3277-26-7

Molecular Formula

C4H14OSi2

Molecular Weight

134.33 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Hydrocarbons

Basic Physical Properties

Melting Point

<-78°C

Boiling Point

71°C

Solubility

It reacts with water to produce dimethylsilanol, dimethylsilanediol and hydrogen gas.

Refractive Index

n20/D 1.370(lit.)

SMILES

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C[Si](C)O[Si](C)C

InChI

InChI=1S/C4H14OSi2/c1-6(2)5-7(3)4/h6-7H,1-4H3

InChIKey

NVYQDQZEMGUESH-UHFFFAOYSA-N

LogP

0.9697999999999999

Topological Polar Surface Area

9.23 Å²

Hydrogen Bond Donor/Acceptor

0 / 1

Complexity

Safety Information

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GHS Hazard Pictograms

H225

Hazard Statement

H225 Highly Flammable liquid and vapor
Flammable liquids

Hazard Class

Class 3 Class 3

Sensitiveness

Moisture Sensitive

Explosive Limit

0.8-62.9%(V)

Synonyms & References

English

9HC8F6L8F3
Disiloxane, tetramethyl-
CT2030
Bis(dimethylsilyl) oxide
LS-13027
Dimethylsilyl ether
(CH3)2HSiOSiH(CH3)2
NSC 155369
AKOS015901504
Tox21_303833
Bis(dimethylsilyl) ether
1,1,3,3-Tetramethyldisiloxane
EINECS 221-906-4
30110-74-8
EC 221-906-4
SCHEMBL8459577
DTXCID6030574
((CH3)2SiH)2O
TETRAMETHYLDISILOXANE; DISILOXANE, 1,1,3,3-TETRAMETHYL-
Dimethylsilyl ether; LS 7040; NSC 155369; T 2030
CAS-3277-26-7
D78156
NSC-155369
sym-Tetramethyldisiloxane
EINECS 250-053-0
1,3-Dihydrotetramethyldisiloxane
3277-26-7
T 2030
Disiloxane,1,3,3-tetramethyl-
dimethylsilylideneoxonio(dimethyl)silanide
DTXSID3052010

MDL Number

MFCD00008256

Customs Code

29310095

FAQ

What is 1,1,3,3-Tetramethyldisiloxane (CAS: 3277-26-7)?

1,1,3,3-Tetramethyldisiloxane (CAS: 3277-26-7) is a cyclic siloxane compound with the chemical formula (CH3)2SiO-Si(CH3)2. It is a colorless, non-volatile liquid with low surface tension, high thermal stability, and inert chemical properties. Commonly used as a solvent and in silicone-based formulations, it is valued for its low reactivity and compatibility with various materials.

What are the main uses of 1,1,3,3-Tetramethyldisiloxane (CAS: 3277-26-7)?

1,1,3,3-Tetramethyldisiloxane (CAS: 3277-26-7) is widely used in pharmaceuticals as a solvent, in industrial applications for coatings and sealants, and in food processing as an emulsifier. It also serves as a key component in silicone production, personal care products, and research for synthesizing other silicon compounds. Its versatility makes it valuable in multiple sectors.

Is 1,1,3,3-Tetramethyldisiloxane (CAS: 3277-26-7) safe?

1,1,3,3-Tetramethyldisiloxane (CAS: 3277-26-7) is generally considered safe with proper handling. It has low toxicity and is non-flammable, but skin contact or inhalation should be avoided. Safety precautions include using gloves, ensuring adequate ventilation, and following OSHA guidelines. It is approved for use in food and pharmaceutical applications under strict regulatory standards.

How should 1,1,3,3-Tetramethyldisiloxane (CAS: 3277-26-7) be stored?

1,1,3,3-Tetramethyldisiloxane (CAS: 3277-26-7) should be stored in a cool, dry place at temperatures below 25°C. Keep it in sealed, airtight containers away from light and moisture to maintain stability. Avoid exposure to heat sources and ensure storage in well-ventilated areas to prevent potential vapor accumulation.