HEPTAMETHYL CYCLOTETRASILOXANE

Modify Date: 2025-08-28 11:18:13

HEPTAMETHYL CYCLOTETRASILOXANE structure	Common Name	HEPTAMETHYL CYCLOTETRASILOXANE
	CAS Number	15721-05-8	Molecular Weight	282.589
	Density	0.958 g/cm3	Boiling Point	174.3±23.0 °C at 760 mmHg
	Molecular Formula	C₇H₂₂O₄Si₄	Melting Point	-27ºC
	MSDS	N/A	Flash Point	59.2±22.6 °C

Name	2,2,4,4,6,6,8-heptamethyl-1,3,5,7,2,4,6,8λ3-tetraoxatetrasilocane
Synonym	More Synonyms

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

RTECS NUMBER :: GZ4391000

CHEMICAL NAME :: Cyclotetrasiloxane, heptamethyl-

CAS REGISTRY NUMBER :: 15721-05-8

BEILSTEIN REFERENCE NO. :: 1786647

LAST UPDATED :: 199612

DATA ITEMS CITED :: 1

MOLECULAR FORMULA :: C7-H22-O4-Si4

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 3 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: 85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,1228,1986

Risk Phrases	10
Safety Phrases	16
RIDADR	UN 1993
HS Code	2901100000

methyl dichloro...

CAS#:75-54-7

Dichlorodimethy...

CAS#:75-78-5

~60%

HEPTAMETHYL CYC...

CAS#:15721-05-8

Literature: Martynova; Voronkov Russian Journal of Applied Chemistry, 2000 , vol. 73, # 5 p. 921 - 922

methyl dichloro...

CAS#:75-54-7

1,5-dichlorohex...

CAS#:3582-71-6

~5%

HEPTAMETHYL CYC...

CAS#: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%

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

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HEPTAMETHYL CYCLOTETRASILOXANE

Names

Chemical & Physical Properties

Toxicological Information

CHEMICAL IDENTIFICATION

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

Safety Information

Synthetic Route

Customs

Synonyms

The content on this webpage is sourced from various professional data sources. If you have any questions or concerns regarding the content, please feel free to contact service1@chemsrc.com.