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CAS

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31692-79-2

Poly(dimethylsiloxane), hydroxy terminated, also known as PDMS-HT, is a silicone polymer characterized by the presence of hydroxyl groups at the ends of its chain. It is recognized for its exceptional thermal stability, low surface tension, and water repellency, making it a valuable component in a variety of applications across different industries.

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  • 31692-79-2 Structure

  • Basic information

    1. Product Name: POLY(DIMETHYLSILOXANE), HYDROXY TERMINATED
    2. Synonyms: .alpha.-hydro-.omega.-hydroxy-Poly[oxy(dimethylsilylene)];Dimethiconol;Poly[oxy(dimethylsilylene)],.alpha.-hydro-.omega.-hydroxy-;POLY(DIMETHYLSILOXANE), HYDROXY TERMINATED;SILICON PS 347.5, FOR GC;Dimethyl siloxanes;Poly[oxy(dimethylsilylene)],a-hydro-w-hydroxy- (8CI,9CI)
    3. CAS NO:31692-79-2
    4. Molecular Formula: (C2H6 O Si)n H2 O
    5. Molecular Weight: 0
    6. EINECS: N/A
    7. Product Categories: N/A
    8. Mol File: 31692-79-2.mol

  • Chemical Properties

    1. Melting Point: N/A
    2. Boiling Point: 182 °C
    3. Flash Point: 155 °F
    4. Appearance: /
    5. Density: 0.98 g/mL at 25 °C
    6. Refractive Index: n20/D 1.406
    7. Storage Temp.: N/A
    8. Solubility: N/A
    9. CAS DataBase Reference: POLY(DIMETHYLSILOXANE), HYDROXY TERMINATED(CAS DataBase Reference)
    10. NIST Chemistry Reference: POLY(DIMETHYLSILOXANE), HYDROXY TERMINATED(31692-79-2)
    11. EPA Substance Registry System: POLY(DIMETHYLSILOXANE), HYDROXY TERMINATED(31692-79-2)

  • Safety Data

    1. Hazard Codes: Xi
    2. Statements: 36/37/38
    3. Safety Statements: 26-36
    4. WGK Germany: 1
    5. RTECS: VW3157812
    6. HazardClass: N/A
    7. PackingGroup: N/A
    8. Hazardous Substances Data: 31692-79-2(Hazardous Substances Data)

31692-79-2 Usage

Uses

Used in Cosmetics Industry:
Poly(dimethylsiloxane), hydroxy terminated is used as an emollient and moisturizer in skincare products and hair conditioners for its ability to provide a smooth, non-greasy feel and enhance the skin's hydration.
Used in Pharmaceutical Industry:
In pharmaceuticals, PDMS-HT is utilized as a tablet coating to improve the stability and bioavailability of medications, as well as a lubricant for syringes to ensure smooth operation and reduce friction.
Used in Electronics Industry:
Poly(dimethylsiloxane), hydroxy terminated is employed as a dielectric in electrical insulators to prevent electrical leakage and as a sealant for electronic components to protect them from environmental factors and ensure their longevity.
Overall, the versatility of poly(dimethylsiloxane), hydroxy terminated, stems from its unique properties, making it an essential material in various industrial applications.

Check Digit Verification of cas no

The CAS Registry Mumber 31692-79-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,6,9 and 2 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 31692-79:
(7*3)+(6*1)+(5*6)+(4*9)+(3*2)+(2*7)+(1*9)=122
122 % 10 = 2
So 31692-79-2 is a valid CAS Registry Number.

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