ChemicalBook >> CAS DataBase List >>hydroxytrimethylsilane
hydroxytrimethylsilane
- CAS No.
- 1066-40-6
- Chemical Name:
- hydroxytrimethylsilane
- Synonyms
- TMSOH;Trimethylsilanol;Silanol, trimethyl-;Trimethylhydroxysilane;DK031;LS 310;Silanole;213-914-1;Trimethylsilanol,95%;hydroxytrimethylsilane
- CBNumber:
- CB6897671
- Molecular Formula:
- C3H10OSi
- Molecular Weight:
- 90.2
- MDL Number:
- MFCD02751657
- MOL File:
- 1066-40-6.mol
- MSDS File:
- SDS
- TDS File:
- TDS
Last updated:2026-05-28 03:31:10
| Product description | Number | Pack Size | Price |
| Trimethylsilanol ≥97.5% (GC) | 725986 | 10ml | $152 |
| Trimethylsilanol ≥97.5% (GC) | 725986 | 250ml | $830 |
| Trimethylsilanol ≥95% | OR30828 | 5g | $21 |
| Trimethylsilanol ≥95% | OR30828 | 25g | $55 |
| Trimethylsilanol ≥95% | OR30828 | 100g | $204 |
| More product size | |||
| Melting point | -4.5 °C |
|---|---|
| Boiling point | 90℃/760Torr |
| Density | 0.950 |
| vapor pressure | 19-55hPa at 25℃ |
| refractive index | 1.3889 |
| Flash point | 4°(39°F) |
| storage temp. | Sealed in dry,Store in freezer, under -20°C |
| solubility | Chloroform (Sparingly), DMSO (Sparingly), Ethyl Acetate (Slightly), Methanol (Slightly) |
| pka | 12.67±0.58(Predicted) |
| form | liquid |
| color | Clear, colourless |
| Specific Gravity | 0.8139 |
| Viscosity | 3.73mm2/s |
| Water Solubility | Soluble in water (1.00 mg/ml). |
| Hydrolytic Sensitivity | 4: no reaction with water under neutral conditions |
| BRN | 1361356 |
| Henry's Law Constant | 7.0×10-2 mol/(m3Pa) at 25℃, Xu and Kropscott (2014) |
| InChI | 1S/C3H10OSi/c1-5(2,3)4/h4H,1-3H3 |
| InChIKey | AAPLIUHOKVUFCC-UHFFFAOYSA-N |
| SMILES | C[Si](C)(C)O |
| LogP | 1.19-5.06 at 20-25℃ |
| FDA UNII | Z4BIN3300P |
| NIST Chemistry Reference | Silanol, trimethyl(1066-40-6) |
| EPA Substance Registry System | Silanol, trimethyl- (1066-40-6) |
| UNSPSC Code | 12352103 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS02,GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H225-H332-H412 | |||||||||
| Precautionary statements | P210-P233-P240-P241-P273-P304+P340+P312 | |||||||||
| Hazard Codes | F | |||||||||
| Risk Statements | 11 | |||||||||
| RIDADR | UN 1993BF 3 / PGII | |||||||||
| WGK Germany | 1 | |||||||||
| TSCA | TSCA listed | |||||||||
| HazardClass | 3 | |||||||||
| HS Code | 29319090 | |||||||||
| Storage Class | 3 - Flammable liquids | |||||||||
| Hazard Classifications | Acute Tox. 4 Inhalation Aquatic Chronic 3 Flam. Liq. 2 |
|||||||||
| REACH Registrations | Active | |||||||||
| Limited Quantities | 1.0 L (0.3 gallon) (liquid) | |||||||||
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml) | |||||||||
| NFPA 704 |
|
hydroxytrimethylsilane price More Price(33)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 725986 | Trimethylsilanol ≥97.5% (GC) | 1066-40-6 | 10ml | $152 | 2026-04-30 | Buy |
| Sigma-Aldrich | 725986 | Trimethylsilanol ≥97.5% (GC) | 1066-40-6 | 250ml | $830 | 2026-04-30 | Buy |
| Apolloscientific | OR30828 | Trimethylsilanol ≥95% | 1066-40-6 | 5g | $21 | 2026-06-04 | Buy |
| Apolloscientific | OR30828 | Trimethylsilanol ≥95% | 1066-40-6 | 25g | $55 | 2026-06-04 | Buy |
| Apolloscientific | OR30828 | Trimethylsilanol ≥95% | 1066-40-6 | 100g | $204 | 2026-06-04 | Buy |
hydroxytrimethylsilane Chemical Properties,Uses,Production
Description
Trimethylsilanol has strong acidity compared with the corresponding carbon alcohols, can react with tetrahydrolithium aluminum, Si-OH bond can be reduced Si-H bond, can be used as a blocking agent for straight-chain polysiloxanes with hydrophobicity, it is the most important intermediate in the preparation of organosilicon alcohol salts and all kinds of polysiloxanes products including silicone oils, silicone rubbers and silicone resins, etc, and it has a wide range of application prospects.
Chemical Properties
Colorless clear liquid
Uses
Trimethylsilanol used as a hydrophobic coat on silicate surfaces. Used as an as an antimicrobial agent.
Synthesis
Trimethylsilanol is produced by hydrolysis of trimethylchlorosilane.
Toxics Screening Level
The initial risk screening level (IRSL) for Trimethylsilanol is 65 μg/m3 based on an annual averaging time.
hydroxytrimethylsilane Preparation Products And Raw materials
Raw materials
trimethyl-trityl-silane
Phosphonic acid, 1H-imidazol-1-yl-, diphenyl ester
Silane, (4-butylphenyl)trimethyl-
Silane, trimethyl[(trimethylsilyl)methoxy]-
Carbamic acid, [(2R)-2-fluoro-3-(hydroxyphosphinyl)propyl]-, 1,1-dimethylethyl ester, monoammonium salt
BIS(TRIMETHYLSILYLOXY)-PHOSPHINE
9-(TRIMETHYLSILYL)FLUORENE
O-TRIMETHYLSILYL-TERT-BUTYL PEROXIDE
1,1,1-TRIMETHYL-2,2,2-TRIPHENYLDISILANE
BENZYLOXYTRIMETHYLSILANE
1of4
Preparation Products
Global( 266)Suppliers
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Dongguan City Betterly New Materials co.,Ltd | +86-13713468294 | sadie@betely.com | China | 39 | 58 |
| ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD | +86-15225627621 +86-13213167925 | jiuyitime@fdachem.com | China | 16511 | 58 |
| Capot Chemical Co.,Ltd. | +86-（0）57185586718 +86-13336195806 | sales@capot.com | China | 29640 | 60 |
| Shanghai Daken Advanced Materials Co.,Ltd | +86-2158073036 | info@dakenam.com | China | 14026 | 58 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21585 | 55 |
| ATK CHEMICAL COMPANY LIMITED | +undefined-21-51877795 | ivan@atkchemical.com | China | 33024 | 60 |
| Win-Win Chemical CO., Limited | 0086-577-64498589 | sales@win-winchemical.com | CHINA | 998 | 58 |
| Standardpharm Co. Ltd. | 86-714-3992388 | overseasales1@yongstandards.com | United States | 14332 | 58 |
| CONIER CHEM AND PHARMA LIMITED | +8618523575427 | sales@conier.com | China | 49979 | 58 |
| career henan chemical co | +86-0371-86658258 +8613203830695 | factory@coreychem.com | China | 29792 | 58 |
Related articles
- Hydroxytrimethylsilane: vibrational spectra and its detection method
- Hydroxytrimethylsilane has gained wide attention due to the widespread use of silicon materials and their detrimental effects ....
- Feb 20，2025
View Lastest Price from hydroxytrimethylsilane manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-07-02 | Trimethylsilanol
1066-40-6
|
$2.20-8.80 | 1kg | 99% | 100kg | ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD | |
 |
2025-07-17 | Hydroxytrimethylsilane
1066-40-6
|
$6.93-7.98 | 1kg | 98.76% | 18000 tons per year | Iota silicone oil (Anhui) Co.,ltd. | |
 |
2019-12-30 | Trimethylsilanol
1066-40-6
|
$1.00 | 1KG | Min98% HPLC | Career Henan Chemical Co |
-
- Trimethylsilanol
1066-40-6
- $2.20-8.80
- 99%
- ZHENGZHOU JIUYI TIME NEW MATERIALS CO,.LTD
-
- Hydroxytrimethylsilane
1066-40-6
- $6.93-7.98
- 98.76%
- Iota silicone oil (Anhui) Co.,ltd.
-
- Trimethylsilanol
1066-40-6
- $1.00
- Min98% HPLC
- Career Henan Chemical Co
1066-40-6(hydroxytrimethylsilane)Related Search:
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Trimethylsulfoxonium iodide
SODIUM TRIMETHYLSILANOLATE
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Methanesiliconic acid sodium salt
Hexamethyldisilazane
POLY(DIMETHYLSILOXANE), HYDROXY TERMINATED
1of4
Silanol,1,1,1-triMethyl-
TriMethylsilanol >=98.0% (GC)
Trimethylsilanol >=97.5% (GC)
Medetomidine Impurity 17
hydroxytrimethylsilane
Silanole
Trimethylhydroxysilane
LS 310
TRIMETHYLSILANOL, tech-95
Trimethylsilanol,95%
hydroxytrimethylsilane ISO 9001：2015 REACH
Trimethylsilyl alcohol
53003 Trimethylsilanol
DK031
213-914-1
Silanol, trimethyl-
TMSOH
Trimethylsilanol
1066-40-6
125613-45-9
3959-12-04
1066-40-5
Alkyl Silanes
Blocking Agents
Protective Agents
Silylating Agents
bc0001
