1,1,3,3,5,5,7,7-octamethyltetrasiloxane

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Names

[ CAS No. ]:
1000-05-1

[ Name ]:
1,1,3,3,5,5,7,7-octamethyltetrasiloxane

[Synonym ]:
Octamethyltetrasiloxane
EINECS 213-669-0
1,1,3,3,5,5,7,7-Octamethyl-tetrasiloxan
1,1,3,3,5,5,7,7-octamethyltetrasiloxane
dihydro-1,1,3,3,5,5,7,7-octamethyltetrasiloxane
Tetrasiloxane, 1,1,3,3,5,5,7,7-octamethyl-
Tetrasiloxane,1,1,3,3,5,5,7,7-octamethyl
MFCD00039789
1,1,3,3,5,5,7,7-Octamethyl Tetrasiloxane

Chemical & Physical Properties

[ Density]:
0.863

[ Boiling Point ]:
205.1±23.0 °C at 760 mmHg

[ Melting Point ]:
<0ºC

[ Molecular Formula ]:
C8H26O3Si4

[ Molecular Weight ]:
282.632

[ Flash Point ]:
77.8±22.6 °C

[ Exact Mass ]:
282.095886

[ PSA ]:
27.69000

[ LogP ]:
7.69

[ Vapour Pressure ]:
0.4±0.4 mmHg at 25°C

[ Index of Refraction ]:
1.3875

[ Storage condition ]:
2~8℃

Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
XF3902000
CHEMICAL NAME :
Tetrasiloxane, 1,1,3,3,5,5,7,7-octamethyl-
CAS REGISTRY NUMBER :
1000-05-1
LAST UPDATED :
199701
DATA ITEMS CITED :
2
MOLECULAR FORMULA :
C8-H26-O2-Si4

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
9 gm/m3/6H/4W-I
TOXIC EFFECTS :
Liver - other changes Liver - changes in liver weight
REFERENCE :
TOXID9 Toxicologist. (Soc. of Toxicology, Inc., 475 Wolf Ledge Parkway, Akron, OH 44311) V.1- 1981- Volume(issue)/page/year: 15,182,1995

Safety Information

[ Hazard Codes ]:
Xi

[ Risk Phrases ]:
36/37/38

[ Safety Phrases ]:
26-36

[ RTECS ]:
XF3902000

[ HS Code ]:
2934999090

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

  • 1,1,3,3-Tetramethyldisiloxane
  • Octamethylcyclotetrasiloxane
  • hexamethylcyclotrisiloxane
  • 1,7-dichlorooctamethyltetrasiloxane
  • Chlorodimethylsilane
  • dimethylsilanediol
  • 1,1,3,3-Tetramethyl Disilazane
  • thf

DownStream

  • Dimethylsilane
  • hexamethylcyclotrisiloxane
  • 1,1,3,3,5,5-hexamethyltrisiloxane

Customs

[ HS Code ]: 2934999090

[ Summary ]:
2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Related Compounds

  • 1,1,3,3,5,5,7,7-octamethyltetrasiloxane-1,7-diol
  • 1-chloro-1,1,3,3,5,5,7,7-octamethyltetrasiloxane
  • 1,7-Dichloro-1,1,3,3,5,5,7,7-octamethyltetrasiloxane
  • (1,7-bis(1,2-epoxycyclohexyl-4-ethyl))-1,1,3,3,5,5,7,7-octamethyltetrasiloxane
  • 1,1,3,3,5,5,7,7,9,9,11,11,13,13-Tetradecamethylheptasiloxane
  • 1,1,3,3,5,5,7,7-Octamethyl-1,3,5,7-tetrasilacyclooctane
  • 2-Amino-N,N-dimethylthiazole-5-sulfonamide
  • 1-(5-Aminopyrazin-2-yl)pyrrolidin-2-one
  • 2-Amino-N,N-dimethyl-5-thiazolepropanamide
  • N-(1-cyano-1-methylpropyl)-2-(2-methylphenyl)acetamide
  • (6-Hydroxybenzothiazol-2-yl)carbamic acid tert-butyl ester
  • 4-chloro-N-(1-cyano-1-methylpropyl)-2-fluorobenzamide
  • [(5-Aminopentyl)oxy]cyclohexane
  • 1,9-Dibromo-2,8-nonanedione
  • N-(1-cyano-1-methylpropyl)-2-phenoxyacetamide
  • ethyl (3S)-4,4-dimethylpyrrolidine-3-carboxylate
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