Wechat Code
Tetramethyldiydrodisiloxane (TMDSO; HMM)
CAS No. 3277-26-7
Other Name 1,1,3,3-Tetramethyldisiloxane;
Molecular Formula C4H14OSi2
Molecular Weight 134.32
Melting Point (°C) -78 Max.
Flash Point (°C) -20 Max.
Boiling Point (°C) 69-71
Density (g/ml) 0.760
20+ years supplying history;
No claims;
Good and stable quality; Stable supplying;
SGS testing approved; EMTEK, SRICI tested; ISO:90012/ 2015 certified, AAA Credit certified;
Delivery Time: 15-20 days;
Audit acceptable;
Competitive price;
Bigbags Packing; On pallets; IBC packing;
| Testing Item | Standard |
| Content (%) | 99.0 Min. |
| Refractive Index (n20 D) | 1.3714 |
| Appearance | Colorless and Clear Liquid |
HS code: 29310095
CAS No.: 3277-26-7
EINECS: 221-906-4
UN No.: 2924
Hazard Class: 3
Packing Group: II
● Packages:
200L iron drum with internal coating or 1000L IBC tote.
Handling
1. Flammable liquid and vapor — keep away from heat, sparks, open flames, and hot surfaces.
2. Avoid breathing vapors or mist.
3. Avoid contact with skin, eyes, and clothing.
4. Use only in well-ventilated areas with local exhaust ventilation.
5. Wear appropriate PPE: chemical-resistant gloves, safety goggles/face shield, and protective clothing.
6. Ground and bond containers during transfer to prevent static discharge.
7. Do not eat, drink, or smoke while handling.
8. Wash thoroughly after handling.
9. Keep away from strong oxidizing agents and acids.
Storage
1. Store in a cool, dry, well-ventilated area.
2. Keep container tightly closed when not in use.
3. Protect from heat, ignition sources, and direct sunlight.
4. Store in approved flammable liquid storage areas and containers.
5. Keep away from oxidizing agents, acids, and moisture.
6. Use secondary containment to prevent spills.
7. Follow local regulations for storage of flammable liquids.
1. Reducing Agent in Organic Synthesis
TMDSO functions as a mild and selective hydride donor for:
Reduction of carbonyl compounds (aldehydes, ketones)
Reductive transformations under catalytic conditions
Selective hydrosilylation-reduction systems
It is widely used in pharmaceutical and fine chemical synthesis due to controlled reactivity and clean by-product profiles.
2. Hydrosilylation Reactions
The Si–H functionality enables TMDSO to participate in platinum- or transition-metal-catalyzed hydrosilylation of:
Alkenes
Alkynes
Functionalized olefins
Applications include preparation of functional silanes and specialty silicone intermediates.
3. Silicone Crosslinking & Modification
TMDSO serves as a reactive intermediate in:
Silicone elastomer modification
End-group functionalization of polysiloxanes
Crosslinking systems involving Si–H chemistry
It allows controlled incorporation of reactive silane groups into silicone polymers.
4. Intermediate for Functional Siloxanes
TMDSO is used to synthesize:
Si–H terminated siloxanes
Modified polysiloxanes
Organofunctional silane derivatives
Its bifunctional structure enables symmetrical functionalization.
5. Specialty Chemical & Advanced Materials Applications
Due to its defined Si–H reactivity, TMDSO is applied in:
Catalyst systems
Surface modification chemistry
Advanced material development
Research-scale silicon-based transformations
OUR MARKET
Up till now we’ve developed and supplied to many countries and areas all over the world, with main markets in European countries (Germany, Italy, UK, Spain, Ukraine, Russia, Poland, etc.), USA, South America, Mid East, South-east Asia, Australia, etc. Also seeking more strategic partners and customers under mutual benefits and work through the whole purchasing chain.
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Vietnam
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India
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Belgium
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USA
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Czech Republic
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Mexico
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Colombia
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Singapore
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Ecuador
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Peru
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Russia
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Turkey
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Costa Rica
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Chile
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Indonesia
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Pakistan
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