15721-05-8
15721-05-8 structure
- Name: HEPTAMETHYL CYCLOTETRASILOXANE
- Chemical Name: 2,2,4,4,6,6,8-heptamethyl-1,3,5,7,2,4,6,8λ3-tetraoxatetrasilocane
- CAS Number: 15721-05-8
- Molecular Formula: C7H22O4Si4
- Molecular Weight: 282.589
- Create Date: 2018-05-23 08:00:00
- Modify Date: 2024-01-08 18:21:55
| Name | 2,2,4,4,6,6,8-heptamethyl-1,3,5,7,2,4,6,8λ3-tetraoxatetrasilocane |
|---|---|
| Synonyms |
Heptamethylcyclotetrasiloxane
2,4,4,6,6,8,8-Heptamethylcyclotetrasiloxan 1,3,3,5,5,7,7-Heptamethylcyclotetrasiloxan 2,2,4,4,6,6,8-Heptamethyl-1,3,5,7,2,4,6,8-tetroxatetrasilocane Cyclotetrasiloxane, 2,2,4,4,6,6,8-heptamethyl- CYCLOTETRASILOXANE,HEPTAMETHYL 1,3,3,5,5,7,7-heptamethylcyclotetrasiloxane 2,2,4,4,6,6,8-heptamethyl-1,3,5,7,2,4,6,8 Heptamethyl-cyclotetrasiloxan |
| Density | 0.958 g/cm3 |
|---|---|
| Boiling Point | 174.3±23.0 °C at 760 mmHg |
| Melting Point | -27ºC |
| Molecular Formula | C7H22O4Si4 |
| Molecular Weight | 282.589 |
| Flash Point | 59.2±22.6 °C |
| Exact Mass | 282.059509 |
| PSA | 36.92000 |
| LogP | 2.02210 |
| Vapour Pressure | 1.6±0.3 mmHg at 25°C |
| Index of Refraction | 1.3965 |
CHEMICAL IDENTIFICATION
HEALTH HAZARD DATAACUTE TOXICITY DATA
|
|
~60%
15721-05-8 |
| Literature: Martynova; Voronkov Russian Journal of Applied Chemistry, 2000 , vol. 73, # 5 p. 921 - 922 |
|
~5%
15721-05-8 |
| Literature: Juengst, Clifford D.; Weber, William P.; Manuel, Georges Journal of Organometallic Chemistry, 1986 , vol. 308, p. 187 - 194 |
| HS Code | 2901100000 |
|---|---|
| Summary | 2901100000 saturated acyclic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0% |