Trisiloxane, 1,1,3,5,5-pentamethyl-1,5-diphenyl-, also known as 1,1,3,5,5-pentamethyl-1,5-diphenyltrisiloxane, is a cyclic siloxane compound with the chemical formula C16H26OSi3. It consists of three silicon atoms connected in a ring, with each silicon atom bonded to an oxygen atom and two methyl groups. Additionally, two phenyl groups are attached to the central silicon atoms, making it a symmetrical molecule. Trisiloxane, 1,1,3,5,5-pentamethyl-1,5-diphenyl- is primarily used as a component in various silicone-based products, such as lubricants, sealants, and polymers, due to its unique properties like thermal stability, low toxicity, and resistance to oxidation.

73703-38-5

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Basic information
1. Product Name: Trisiloxane, 1,1,3,5,5-pentamethyl-1,5-diphenyl-
2. Synonyms:
3. CAS NO:73703-38-5
4. Molecular Formula: C17H26O2Si3
5. Molecular Weight:
6. EINECS: N/A
7. Product Categories: N/A
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: N/A
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: Trisiloxane, 1,1,3,5,5-pentamethyl-1,5-diphenyl-(CAS DataBase Reference)
10. NIST Chemistry Reference: Trisiloxane, 1,1,3,5,5-pentamethyl-1,5-diphenyl-(73703-38-5)
11. EPA Substance Registry System: Trisiloxane, 1,1,3,5,5-pentamethyl-1,5-diphenyl-(73703-38-5)
Safety Data
1. Hazard Codes: N/A
2. Statements: N/A
3. Safety Statements: N/A
4. WGK Germany:
5. RTECS:
6. HazardClass: N/A
7. PackingGroup: N/A
8. Hazardous Substances Data: 73703-38-5(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 73703-38-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,7,0 and 3 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 73703-38:
(7*7)+(6*3)+(5*7)+(4*0)+(3*3)+(2*3)+(1*8)=125
125 % 10 = 5
So 73703-38-5 is a valid CAS Registry Number.

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73703-32-9 C₂₁H₃₄O₄Si₃

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