70900-21-9

70900-21-9 - Names and Identifiers

Name	Hydrideterminatedpolydimethylsiloxane
Synonyms	Hydrogen-terMniated silicone oil Hydrideterminatedpolydimethylsiloxane HYDRIDE TERMINATED POLYDIMETHYLSILOXANE Polysiloxanes di-Me hydrogen-terminated Polydimethylsiloxane, hydride terminated hydride terminated polydimethylsiloxane, 2-3 cst hydride terminated polydimethylsiloxane, 100 cst Di-Me-Siloxanes and Silicones hydrogen-terminated hydride terminated polydimethylsiloxane, 1,000 cst hydride terminated polydimethylsiloxane, 10,000 cst Poly(diMethylsiloxane), hydride terMinated average Mn ~17,500
CAS	70900-21-9

70900-21-9 - Physico-chemical Properties

Molecular Formula	C6H20O2Si3
Molar Mass	208.4783
Density	0.971g/mLat 25°C
Boling Point	230°C(lit.)
Flash Point	215°F
Specific Gravity	0.90
Storage Condition	Room Temprature
Refractive Index	n20/D 1.406

70900-21-9 - Risk and Safety

Hazard Symbols	Xi - Irritant
Risk Codes	36/37/38 - Irritating to eyes, respiratory system and skin.
Safety Description	S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing.
WGK Germany	1
TSCA	Yes

70900-21-9 - Introduction

It is a common organosilicon compound with the chemical formula (CH3)3SiO[(CH3)2SiO]nSi(CH3)3. It has some of the following properties:

1. Physical properties: It is a colorless and odorless liquid with low viscosity and high chemical stability.

2. Thermal stability: It can maintain its physical and chemical properties in a wide temperature range, from as low as -50 ° C to as high as 200 ° C.

3. Chemical stability: Excellent chemical stability in the presence of acid, alkali, solvent and oxygen.

4. Insulation performance: It has good electrical insulation and can be used for electrical insulation materials.

The main purpose of:

1. Lubricant: Due to its low viscosity and chemical stability, it is widely used in lubricants, sealants and greases.

2. Surfactant: It can be used to prepare special surfactants for skin care products, detergents and cosmetics.

3. Sealing material: It can be used in sealants and adhesives for electronic components, automotive parts and building materials.

preparation method: can be obtained by polymerizing dimethyl siloxane monomer under the action of a catalyst.

Safety information: It is a relatively safe compound, but care should be taken to prevent it from touching the skin and eyes. During use, follow proper operating procedures and use necessary protective measures, such as gloves and goggles. In case of contact with skin or eyes, rinse immediately with plenty of water and seek medical help.

Last Update：2024-04-09 21:04:16