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Polydimethylsiloxane, dihydroxy terminated

Polydimethylsiloxane, dihydroxy terminated Structure
Polydimethylsiloxane, dihydroxy terminated structure
CAS No.
70131-67-8
Chemical Name:
Polydimethylsiloxane, dihydroxy terminated
Synonyms
Hydroxyl Silicone Oil;rf5000;SILICON PS 347.5;Hydroxyl silicone fluid;ps195;fm0411;ps339.7;q4-2737;PS 347.5;x22-160a
CBNumber:
CB4328007
Molecular Formula:
HOSi
Molecular Weight:
45.09284
MDL Number:
MFCD00286442
MOL File:
70131-67-8.mol
Last updated:2025-01-27 09:38:02
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Polydimethylsiloxane, dihydroxy terminated Properties

Melting point <-60°C
Boiling point 182 °C
Density 0.98 g/mL at 25 °C
refractive index n20/D 1.406
Flash point 155 °F
storage temp. 2-8°C
form Liquid
Specific Gravity 0.97
Viscosity 100cs
Viscosity 18,000cs
Viscosity 2,000cs
Viscosity 25cs
Viscosity 60cs
Viscosity 700cs
Water Solubility Soluble in carbon tetrachloride, benzene, chloroform, diethyl ether, toluene and other organic solvents. Insoluble in water and ethanol.
InChI InChI=1S/HOSi/c1-2/h1H
InChIKey XQSFXFQDJCDXDT-UHFFFAOYSA-N
SMILES [Si]O[H]
EPA Substance Registry System Hydroxy-terminated dimethyl siloxanes and silicones (70131-67-8)
UNSPSC Code 12352300
NACRES NA.23

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
GHS07
Signal word  Warning
Hazard statements  H319
Precautionary statements  P264-P280-P305+P351+P338-P337+P313P
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  23-24/25-36-26
WGK Germany  1
RTECS  VW3157812
TSCA  Yes
NFPA 704
1
0 0

Polydimethylsiloxane, dihydroxy terminated price More Price(28)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 432989 Poly(dimethylsiloxane), hydroxy terminated viscosity 2550-3570cSt 70131-67-8 100ml $50.8 2023-06-20 Buy
Sigma-Aldrich 432989 Poly(dimethylsiloxane), hydroxy terminated viscosity 2550-3570cSt 70131-67-8 500ml $183 2023-06-20 Buy
Alfa Aesar 043769 Polydimethylsiloxane, hydroxy terminated, M.W. 4200 70131-67-8 1L $190 2024-03-01 Buy
Alfa Aesar 043769 Polydimethylsiloxane, hydroxy terminated, M.W. 4200 70131-67-8 2.5L $438 2024-03-01 Buy
scipoly 870 Polydimethylsiloxane, dihydroxy terminated 70131-67-8 50g $58 2024-07-03 Buy
Product number Packaging Price Buy
432989 100ml $50.8 Buy
432989 500ml $183 Buy
043769 1L $190 Buy
043769 2.5L $438 Buy
870 50g $58 Buy

Polydimethylsiloxane, dihydroxy terminated Chemical Properties,Uses,Production

Description

Polydimethylsiloxane, dihydroxy terminated is a non-toxic, optically transparent, inert, flammable silicone-based organic polymer. It is widely used in heat-resistant lubricants, flame retardants, medical devices, and cosmetics. Polydimethylsiloxane is hydrophobic, cytocompatible and viscoelastic and can be used for water-repellent coatings in the textile industry.

Chemical Properties

Silanol Terminated Polydimethylsiloxane is a silicon-basedorganic polymer that is nontoxic, optically clear, inert, and inflammablematerial. It is widely used in heat-resistant lubricants, fire retardants,medical devices, and cosmetics. Polydimethylsiloxane is hydrophobic,cytocompatible, and viscoelastic which can be used to prepare water-repellentcoatings in the textile industry.

Uses

Polydimethylsiloxane is frequently used in a liquid containing 4-5% silica gel, emulsifiers and preservatives. It is employed in applications like contact lenses, medical devices, elastomers, in shampoos, food (antifoaming agent), caulking, lubricants, kinetic sand , and heat-resistant tiles. PDMS is a common surfactant, component of defoamers and as an herbicidal penetran.

Solubility in organics

THF, toluene, Insoluble in water

Toxics Screening Level

The initial threshold screening level (ITSL) for hydroxyl-terminated dimethyl siloxanes and siliconesremains at 0.1 μg/m3 based on an annual averaging time.

Polydimethylsiloxane, dihydroxy terminated Preparation Products And Raw materials

Raw materials

Octamethylcyclotetrasiloxane Amino-modified silicone oil EMULSIFIER

Preparation Products

Polydimethylsiloxane, dihydroxy terminated Suppliers

Global( 199)Suppliers
Supplier Tel Email Country ProdList Advantage
Dayang Chem (Hangzhou) Co.,Ltd.
+86-0571-88938639 +8617705817739 info@dycnchem.com China 52849 58
Wuhan Kemi-Works Chemical Co., Ltd.
+86-2785736489 +8618171418573 sales@kemiworks.com China 729 58
Univar Solutions(China) Co., Ltd.
+8615902132654 ivy.zhuang@univarsolutions.com China 654 58
Iota silicone oil (Anhui) Co.,ltd.
+86-15255260163 sales05@siliconeoil.net China 311 58
Wuhan Bright Chemical Co., Ltd
+86-02785804899 +86-15071395570 alice@brightchemical.com.cn China 93 58
Dongguan City Betterly New Materials co.,Ltd
+86-13713468294 +86-13713468294 sadie@betely.com China 39 58
Hebei Chuanghai Biotechnology Co., Ltd 		+8615531157085 abby@chuanghaibio.com China 8808 58
Hebei Mujin Biotechnology Co.,Ltd 		+86 13288715578 +8613288715578 sales@hbmojin.com China 12809 58
Hebei Yanxi Chemical Co., Ltd. 		+8617531153977 allison@yan-xi.com China 5854 58
Hebei Chuanghai Biotechnology Co,.LTD 		+86-13131129325 sales1@chuanghaibio.com China 5868 58
Supplier Advantage
Dayang Chem (Hangzhou) Co.,Ltd.
58
Wuhan Kemi-Works Chemical Co., Ltd.
58
Univar Solutions(China) Co., Ltd.
58
Iota silicone oil (Anhui) Co.,ltd.
58
Wuhan Bright Chemical Co., Ltd
58
Dongguan City Betterly New Materials co.,Ltd
58
Hebei Chuanghai Biotechnology Co., Ltd 		58
Hebei Mujin Biotechnology Co.,Ltd 		58
Hebei Yanxi Chemical Co., Ltd. 		58
Hebei Chuanghai Biotechnology Co,.LTD 		58

View Lastest Price from Polydimethylsiloxane, dihydroxy terminated manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
SILANOL TERMINATED POLYDIMETHYLSILOXANE pictures 2025-04-23 SILANOL TERMINATED POLYDIMETHYLSILOXANE
70131-67-8
 US $10.00-8.00 / KG 1KG 99% 10 mt Hebei Chuanghai Biotechnology Co., Ltd
SILANOL TERMINATED POLYDIMETHYLSILOXANE pictures 2025-04-15 SILANOL TERMINATED POLYDIMETHYLSILOXANE
70131-67-8
 US $0.00-0.00 / KG 1KG 99% 500000kg Hebei Chuanghai Biotechnology Co., Ltd
Polydimethylsiloxane, dihydroxy terminated pictures 2025-04-15 Polydimethylsiloxane, dihydroxy terminated
70131-67-8
 US $55.00 / kg 1kg 99% 5000kg/week Hebei Zhuanglai Chemical Trading Co.,Ltd

70131-67-8(Polydimethylsiloxane, dihydroxy terminated)Related Search:

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SILANOL TERMINATED POLYDIMETHYLSILOXANE SILANOL TERMINATED POLYDIMETHYLSILOXANE,18000CS SILANOL TERMINATED POLYDIMETHYLSILOXANES PS 347.5 POLYDIMETHYLSILOXANE, DIHYDROXY TERMINATED POLYDIMETHYLSILOXANE, SILANOL TERMINATED baysilonc0.7 di-me,hydroxy-terminated-siloxanesandsilicone Dimethylhydroxysiliconeoilemulsion fm0411 macromonomerhk20 non-end-blockedsiloxanes ps195 ps339.7 q4-2737 silanol-terminateddi-mesiloxanes siliconel-90000/1000 siloxanesandsilicones,di-me,hydroxy-inated Siloxanesandsilicones,di-me,hydroxy-terminated siloxanesandsiliconesdi-me,hydroxy-terminated42%indimethylhydrolyzate siltechs700 x21-22-160as x22-160a x22-160as x22-160b x22-176b Organic silicon softener POLY(DIMETHYLSILOXANE), HYDROXY TERM-INA TED, VISCOSITY CA. 750 CENTISTOKES POLY(DIMETHYLSILOXANE), HYDROXY TERM-INA TED, VISCOSITY 20,000 CENTISTOKES POLY(DIMETHYLSILOXANE), HYDROXY TERM-INA TED, VISCOSITY 100 CENTISTOKES POLY(DIMETHYLSILOXANE), HYDROXY TERM-INA TED, VISCOSITY CA. 25 CENTISTOKES POLY(DIMETHYLSILOXANE), HYDROXY TERM-INA TED, VISCOSITY CA. 1000 CENTISTOKES POLY(DIMETHYLSILOXANE), HYDROXY TERM-INA TED, VISCOSITY CA. 65 CENTISTOKES POLY(DIMETHYLSILOXANE), HYDROXY TERM, VI SCOSITY CA. 3,500 CENTISTOKES POLY(DIMETHYLSILOXANE), HYDROXY TERM-INA TED, VISCOSITY CA 50000 CENTISTOKES HYDROXY TERMINATED POLY(DIMETHYL SILOXANE) Polydimethylsiloxane, silanol terminated, PS 347.5 HO[-Si(CH3)2O-]H SILANOL TERMINATED POLYDIMETHYLSILOXANE, 90,000-150,000 cSt SILANOL TERMINATED POLYDIMETHYLSILOXANE,18,000 cSt SILANOL TERMINATED POLYDIMETHYLSILOXANE, 3,500 cSt SILANOL TERMINATED POLYDIMETHYLSILOXANE, 50,000 cSt SILANOL TERMINATED POLYDIMETHYLSILOXANE, 2,000 cSt SILANOL TERMINATED POLYDIMETHYLSILOXANE, 45-85 cSt SILANOL TERMINATED POLYDIMETHYLSILOXANE, 35-45 cSt SILANOL TERMINATED POLYDIMETHYLSILOXANE, 90-120 cSt SILANOL TERMINATED POLYDIMETHYLSILOXANE, 5,000c cSt SILANOL TERMINATED POLYDIMETHYLSILOXANE, 1,000 cSt SILANOL TERMINATED POLYDIMETHYLSILOXANE, 16-32 cSt SILANOL TERMINATED POLYDIMETHYLSILOXANE, 700-800 cSt SILANOL TERMINATED POLYDIMETHYLSILOXANE cSt 2000 Silanol TerMinated PolyMethylsiloxanes Polysiloxanes di-Me hydroxy-terminated POLY(DIMETHYLSILOXANE), HYDROXY TERM-INA TED, VISCOSITY 2,000 CENTISTOKES Polydimethylsiloxane, silanol terminated, 0.8-0.9 % OH, viscosity 90-120 cSt. Polydimethylsiloxane, silanol terminated, % OH 0.03, viscosity 50000 cSt. Polydimethylsiloxane, silanol terminated, 0.2% OH, viscosity 700-800 cSt. Polydimethylsiloxane, silanol terminated, 0.1 % OH, viscosity 1000 cSt.