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七甲基环四硅氧烷

七甲基环四硅氧烷名称

[ CAS 号 ]:
15721-05-8

[ 中文名 ]:
七甲基环四硅氧烷

[ 英文名 ]:
HEPTAMETHYL CYCLOTETRASILOXANE

[英文别名 ]:

Heptamethylcyclotetrasiloxane
2,4,4,6,6,8,8-Heptamethylcyclotetrasiloxan
1,3,3,5,5,7,7-Heptamethylcyclotetrasiloxan
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

七甲基环四硅氧烷物理化学性质

[ 密度 ]:
0.958 g/cm3

[ 沸点 ]:
174.3±23.0 °C at 760 mmHg

[ 熔点 ]:
-27ºC

[ 分子式 ]:
C₇H₂₂O₄Si₄

[ 分子量 ]:
282.589

[ 闪点 ]:
59.2±22.6 °C

[ 精确质量 ]:
282.059509

[ PSA ]:
36.92000

[ LogP ]:
2.02210

[ 外观性状 ]:
液体

[ 蒸汽压 ]:
1.6±0.3 mmHg at 25°C

[ 折射率 ]:
1.3965

[ 储存条件 ]:
2-8°C，密封，干燥

七甲基环四硅氧烷毒性和生态

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

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七甲基环四硅氧烷安全信息

[ 风险声明 (欧洲) ]:
10

[ 安全声明 (欧洲) ]:
16

[ 危险品运输编码 ]:
UN 1993

[ 海关编码 ]:
2901100000

七甲基环四硅氧烷合成路线

详细合成路线

七甲基环四硅氧烷海关

[ 海关编码 ]: 2901100000

[ 中文概述 ]:
2901100000 饱和无环烃。监管条件:无。增值税率:17.0%。退税率:9.0%。最惠国关税:2.0%。普通关税:30.0%

[ 申报要素 ]: 品名, 成分含量, 用途, 用作气体燃料的应报明包装容器容积, 散装货物应报明

[ Summary ]:
2901100000 saturated acyclic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0%