Cas no 1066-40-6 (Trimethylsilanol)

Trimethylsilanol (TMSOL) is a volatile organosilicon compound with the chemical formula (CH?)?SiOH. It is characterized by its low molecular weight and high reactivity, making it a valuable intermediate in the synthesis of siloxanes, silicones, and other organosilicon derivatives. TMSOL is particularly noted for its ability to act as a blocking agent or capping reagent in polymer and surface modification processes. Its volatility and thermal stability allow for efficient removal under mild conditions, minimizing residual byproducts. Additionally, TMSOL is used in applications requiring precise control over surface hydrophobicity or as a precursor in the production of specialty coatings and adhesives.

Trimethylsilanol structure

Product Name:Trimethylsilanol

CAS No:1066-40-6

MF:C₃H₁₀OSi

MW:90.1964

MDL:MFCD02751657

CID:40601

PubChem ID:329764205

Update Time:2025-06-07

Trimethylsilanol Chemical and Physical Properties

Names and Identifiers

- Hydroxytrimethylsilane
- Trimethylsilanol
- Silanol, trimethyl-
- Silanole
- Trimethylhydroxysilane
- TRIMETHYL-SILANOL
- TRIMETHYLSILANOL, tech-95
- hydroxy(trimethyl)silane
- TMS
- TMSiOH
- LS 310
- Silanol,1,1,1-triMethyl-
- Medetomidine Impurity 17
- Trimethyl silanol
- Trimethylsilanol >=97.5% (GC)
- TriMethylsilanol >=98.0% (GC)
- Silanol, 1,1,1-trimethyl-
- Z4BIN3300P
- AAPLIUHOKVUFCC-UHFFFAOYSA-N
- KSC504M9B
- Trimethylsilanol, >=97.5% (GC)
- FCH831809
- OR30828
- TRA0037541
- AB0034632
- X8811
- TRIMETHYLSILANOL, tech
- Q416218
- UNII-Z4BIN3300P
- C3H10OSi
- DTXSID7061433
- (trimethylsilyl)oxy
- NS00042255
- CCRIS 1320
- Silanol, trimethyl
- CHEMBL4238997
- Silanol, 1,1,1trimethyl
- trimethylsilyl alcohol
- AKOS006229083
- Trimethylsilano
- DTXSID601349160
- 54572-10-0
- DTXCID3033010
- EINECS 213-914-1
- MFCD02751657
- 1066-40-6
- MDL： MFCD02751657
- Inchi： 1S/C3H10OSi/c1-5(2,3)4/h4H,1-3H3
- InChI Key： AAPLIUHOKVUFCC-UHFFFAOYSA-N
- SMILES： [Si](C([H])([H])[H])(C([H])([H])[H])(C([H])([H])[H])O[H]

Computed Properties

Exact Mass: 90.05010
Monoisotopic Mass: 90.050091473g/mol
Isotope Atom Count: 0
Hydrogen Bond Donor Count: 1
Hydrogen Bond Acceptor Count: 1
Heavy Atom Count: 5
Rotatable Bond Count: 0
Complexity: 28.4
Covalently-Bonded Unit Count: 1
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count : 0
Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Surface Charge: 0
Tautomer Count: nothing
XLogP3: nothing
Topological Polar Surface Area: 20.2

Experimental Properties

Density: 0.950
Boiling Point: 90℃/760Torr
Flash Point: Fahrenheit: 39.2 ° f
Celsius: 4 ° c
Water Partition Coefficient: Soluble in water (1.00 mg/ml).
PSA: 20.23000
LogP: 0.81360

Trimethylsilanol Security Information

Symbol:
Signal Word：Danger
Hazard Statement： H225
Warning Statement： P210
Hazardous Material transportation number：UN 1993BF 3 / PGII
WGK Germany：2
Hazard Category Code： 11
Hazardous Material Identification：
HazardClass：3
TSCA：Yes

Trimethylsilanol Customs Data

Customs Data：

China Customs Code:
2931900090

Overview:

2931900090. Other organic-Inorganic compound. VAT:17.0%. Tax refund rate:13.0%. Regulatory conditions:AB(Customs clearance form for Inbound Goods,Customs clearance form for outbound goods). MFN tariff:6.5%. general tariff:30.0%

Summary:

2931900090. other organo-inorganic compounds. VAT:17.0%. Tax rebate rate:13.0%. Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward). MFN tariff:6.5%. General tariff:30.0%

Trimethylsilanol Pricemore >>

Related Categories	No.	Product Name	Cas No.	Purity	Specification	Price	update time
Fluorochem	078729-1g	Trimethylsilanol	1066-40-6	94%	1g	￡12.00	2022-03-01
Fluorochem	078729-5g	Trimethylsilanol	1066-40-6	94%	5g	￡32.00	2022-03-01
Fluorochem	078729-10g	Trimethylsilanol	1066-40-6	94%	10g	￡52.00	2022-03-01
Fluorochem	078729-25g	Trimethylsilanol	1066-40-6	94%	25g	￡80.00	2022-03-01
SHANG HAI A LA DING SHENG HUA KE JI GU FEN Co., Ltd.	T123055-100g	Trimethylsilanol	1066-40-6	≥95.0%(GC)	100g	￥1411.90	2023-08-31
SHANG HAI A LA DING SHENG HUA KE JI GU FEN Co., Ltd.	T123055-25g	Trimethylsilanol	1066-40-6	≥95.0%(GC)	25g	￥441.90	2023-08-31
SHANG HAI A LA DING SHENG HUA KE JI GU FEN Co., Ltd.	T123055-5g	Trimethylsilanol	1066-40-6	≥95.0%(GC)	5g	￥113.90	2023-08-31
SHANG HAI JI ZHI SHENG HUA Technology Co., Ltd.	T69630-5g	Trimethylsilanol	1066-40-6	95%(GC)	5g	￥104.0	2023-09-06
SHANG HAI JI ZHI SHENG HUA Technology Co., Ltd.	T69630-25g	Trimethylsilanol	1066-40-6	95%(GC)	25g	￥380.0	2023-09-06
SHANG HAI JI ZHI SHENG HUA Technology Co., Ltd.	T69630-100g	Trimethylsilanol	1066-40-6		100g	￥1756.0	2021-09-07

Trimethylsilanol Production Method

Trimethylsilanol Suppliers

Tiancheng Chemical (Jiangsu) Co., Ltd

Gold Member

Audited Supplier

(CAS:1066-40-6)三甲基硅醇

Order Number:LE25939834;LE5381

Stock Status:in Stock

Quantity:25KG,200KG,1000KG

Purity:99%

Pricing Information Last Updated:Friday, 20 June 2025 12:53

Price ($):discuss personally

Email:[email protected]

Suzhou Senfeida Chemical Co., Ltd

Gold Member

Audited Supplier

(CAS:1066-40-6)hydroxytrimethylsilane

Order Number:sfd15341

Stock Status:in Stock

Quantity:200kg

Purity:99.9%

Pricing Information Last Updated:Friday, 19 July 2024 14:37

Price ($):discuss personally

Email:[email protected]

Product Official Link

Trimethylsilanol Related Literature

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2. An ionic liquid catalyzed probase method for one-pot synthesis of α,β-unsaturated esters from esters and aldehydes under mild conditions

Gang Wang,Yiming Xu,Suojiang Zhang,Zengxi Li,Chunshan Li Green Chem. 2017 19 4838
3. Characterization of ion processes in a GC/DMS air quality monitor by integration of the instrument to a mass spectrometer

T. F. Limero,E. G. Nazarov,M. Menlyadiev,G. A. Eiceman Analyst 2015 140 922
4. Spontaneous reduction and dispersion of graphene nano-platelets with in situ synthesized hydrazine assisted by hexamethyldisilazane

Joong Tark Han,Jeong In Jang,Bo Hwa Jeong,Beom Joon Kim,Seung Yol Jeong,Hee Jin Jeong,Jeong Ho Cho,Geon-Woong Lee J. Mater. Chem. 2012 22 20477
5. A comparative approach to the most sustainable protocol for the β-azidation of α,β-unsaturated ketones and acids

John Andraos,Eleonora Ballerini,Luigi Vaccaro Green Chem. 2015 17 913

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