Molekula
Dimethylsilanediol
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Dimethylsilanediol is a silicon-containing organic compound used in silicone polymer synthesis and as a precursor in specialty chemical applications. Under the related name dimethiconol, it is also listed as a cosmetic ingredient, linking it to silicone-based personal care formulations. It appears as a colorless to pale yellow liquid and is sensitive to moisture and heat. CAS: 1066-42-8, Molecular Formula: C2H8O2Si, Molecular Weight: 92.1692 g/mol, Storage: -15 to -20 °C, Signal Word: Warning. Molekula supplies Dimethylsilanediol from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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25 mg — £154.20 per pack ex VAT · £185.04 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White snowflake crystal |
| Purity | ≥95.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | -15 to -20 °C |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90026440 |
| CAS Number | 1066-42-8 |
| IUPAC Name | dihydroxy(dimethyl)silane |
| EC Number | 213-915-7 |
| Molecular Formula | C2H8O2Si |
| Molecular Weight | 92.1692 |
| Exact Mass | 92.0294 |
| SMILES | C[Si](C)(O)O |
| InChIKey | XCLIHDJZGPCUBT-UHFFFAOYSA-N |
| InChI | InChI=1S/C2H8O2Si/c1-5(2,3)4/h3-4H,1-2H3 |
| PubChem CID | 14014 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29319090 |
| Tariff Code | 2931900090 |
Safety & GHS
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- H302 + H312 + H332 Harmful if swallowed, in contact with skin or if inhaled
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H361 Suspected of damaging fertility or the unborn child
Precautionary statements
- P263 Avoid contact during pregnancy/while nursing
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 1,1-Dimethylsilanediol
- C2H8O2Si
- dihydroxy(dimethyl)silane
- Dihydroxydimethylsilane; Dimethyldihydroxysilane; Dimethylsilanediol;
- Dimethiconol
- Hydroxy-terminated poly(dimethylsiloxane)
- Polydimethylsiloxane, hydroxy terminated, M.W. 4200
- Silanediol, 1,1-dimethyl-
- Silanediol, dimethyl-
Frequently asked questions
What is Dimethylsilanediol used for?
It is primarily used as a precursor in the synthesis of silicon-based polymers and as a crosslinking agent in silicone chemistry.
What is the chemical formula and molecular weight of Dimethylsilanediol?
The formula is C2H8O2Si with a molecular weight of 92.1692 g/mol.
How should Dimethylsilanediol be stored?
It should be stored at temperatures between -15 and -20 °C to maintain stability.
What grade of Dimethylsilanediol does Molekula supply?
Molekula supplies Dimethylsilanediol in technical grade, suitable for industrial and research applications.
Can Molekula supply Dimethylsilanediol in bulk?
Yes, Molekula can supply Dimethylsilanediol in bulk quantities; please contact our sales team for pricing and availability.
What documentation comes with a purchase of Dimethylsilanediol?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.