2,2,4,4,6,6,8-Heptamethylcyclotetrasiloxane
Basic information
- CAS
15721-05-8- Standard SMILES
C[SiH]1O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1- InChIKey
CLTMUXYRYKDGOK-UHFFFAOYSA-N- Molecular formula
- C7H22O4Si4
- Average molar mass
- 282.59 g/mol
- Monoisotopic mass
- 282.05951532
Names & identifiers
- Preferred name
- 2,2,4,4,6,6,8-Heptamethylcyclotetrasiloxane
- IUPAC
- 2,2,4,4,6,6,8-heptamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
- English name
- Heptamethyl cyclotetrasiloxane
- Molecular formula
- C7H22O4Si4
- Molecular weight
- 282.59
Names & synonyms
CYCLOTETRASILOXANE, HEPTAMETHYL-RefChem:440682DTXCID908871815721-05-82,2,4,4,6,6,8-HeptamethylcyclotetrasiloxaneDTXSID101662272,2,4,4,6,6,8-heptamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocaneC7H22O4Si4SCHEMBL116238CLTMUXYRYKDGOK-UHFFFAOYSA-NAKOS028110610DB-319624
Show more names
heptamethyl-cyclotetrasiloxanHeptamethyl cyclotetrasiloxaneHEPTAMETHYLCYCLOTETRASILOXANE, tech-95Cyclotetrasiloxane,2,2,4,4,6,6,8-heptamethyl-2,2,4,4,6,6,8-heptamethyl-1,3,5,7,2,4,6,8λ3-tetraoxatetrasilocane2,2,4,4,6,6,8-heptamethyl-1,3,5,7,2,4,6,8λsup3sup-tetraoxatetrasilocane
S092402,2,4,4,6,6,8-Heptamethylcyclooctanetetrasiloxane2,2,4,4,6,6,8-Heptamethylcyclotetrasiloxane; 1,3,3,5,5,7,7-Heptamethylcyclotetrasiloxane; Heptamethylcyclotetrasiloxane
Database identifiers
- CAS
15721-05-8- PubChem CID
- 27466
- EC Number
- 688-328-6
Properties
Computed structural properties
- Topological polar surface area
- 36.9 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 4
- Rotatable bonds
- 0
- Heavy atoms
- 15
- Formal charge
- 0
- Complexity
- 221
Physicochemical properties
- Melting point
- -27 °C · -27°C
- Boiling point
- 165 °C · 165°C
- Density
- 0 · 0,958 g/cm3
- refractive index
- 1.3965 · 1.3965
- Flash point
- 46 °C · 46°C
- storage temp.
- Refrigerator
- solubility
- Chloroform (Slightly), Methanol (Slightly)
- form
- liquid
- Specific Gravity
- 0.958 · 0.958
- color
- Clear Colourless
- Hydrolytic Sensitivity
- 3 · 3: reacts with aqueous base
- Symbol(GHS)
- 8 · GHS08
- Signal word
- Warning
- Hazard statements
- 413 · H413-H361
- Precautionary statements
- 201 · P201-P202-P281-P308+P313-P405-P501
- Risk Statements
- 10 · 10
- Safety Statements
- 16 · 16
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
GHS classification
GHS Classification
Warning
H226 (50%): Flammable liquid and vapor [Warning Flammable liquids]
P203, P210, P233, P240, P241, P242, P243, P273, P280, P303+P361+P353, P318, P370+P378, P403+P235, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 2 reports by companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard information
Hazard Classes and CategoriesRepr. 2 (50%)
Safety data
- tsca
- No
- ridadr
- 1993
- Toxicity
- mouse,LDLo,oral,3gm/kg (3000mg/kg),"Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986Vol. -, Pg. 1228, 1986.
- risk_code
- 10
- Signal word
- Warning
- Symbol(GHS)
- GHS08
- safety_code
- 16
- Hazard statements
- H413-H361
- Precautionary statements
- P201-P202-P281-P308+P313-P405-P501
Chemistry & industry
Applications
UsesHeptamethylcyclotetrasiloxane is used in the study of the structure-activity relations of organosiloxanes and the female reproductive system.
Suppliers
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Related reactions
1 records
Compound notes
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