CAS 556-67-2 MFCD00003269-Octamethylcyclotetrasiloxane 八甲基环四硅氧烷 TAO{mole}

Octamethylcyclotetrasiloxane 八甲基环四硅氧烷

CAS 556-67-2 MFCD00003269

化学结构图

SMILES: C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1

化学属性

Mol. Formula	C8H24O4Si4
Mol. Weight	296.62
Refractive index	1.3950 to 1.3980
Boiling Point	175°C
Density	0.956
Melting Point	17-18
Flash Point	54°C(lit.)
TSCA	Yes
Vapor Density	1 (vs air)
Solubility	不溶
Appearance	无色透明液体。熔点17.5℃，沸点175℃，74℃（2.66kPa）。相对密度0.9558（20/4℃）。折光率1.3968。闪点60℃。能与有机溶剂溶混，不溶于水。
Stability	moisture sensitive

别名和识别编码

Chemical Name	Octamethylcyclotetrasiloxane
CAS Number	556-67-2
PubChem Substance ID	87574146
EC Number	209-136-7
Beilstein Registry Number	1787074
MDL Number	MFCD00003269
Synonym	Octamethylcyclotetrasiloxane {LY} Octamethylcyclotetrasiloxane {} {LY} Octamethylcyclotetrasiloxane {} {} {LY} Octamethylcyclotetrasiloxane {} {} {} {LY} Octamethylcyclotetrasiloxane {} {} {} {} {LY} Octamethylcyclotetrasiloxane {} {} {} {} {} {LY} Octamethylcyclotetrasiloxane {} {} {} {} {} {} {LY} Octamethylcyclotetrasiloxane {} {} {} {} {} {} {} {LY} Octamethylcyclotetrasiloxane {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} { {} {} {} {} {} {} {} {} {LY} Octamethylcyclotetrasiloxane {} {} {} {} {} {} {} {} {} {LY} Octamethylcyclotetrasiloxane {} {} {} {} {} {} {} {} {} {} {LY} Octamethylcyclotetrasiloxane {} {} {} {} {} {} {} {} {} {} {} {LY} Octamethylcyclotetrasiloxane {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Octamethylcyclotetrasiloxane {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Octamethylcyclotetrasiloxane {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Octamethylcyclotetrasiloxane {} {} {} {} {} {} {} {} {} {} {} {
Reaxys-RN	1787074
Merck Number	6747
Chemical Name Translation	八甲基环四硅氧烷
LabNetwork Molecule ID	LN00193665
InChI	InChI=1S/C8H24O4Si4/c1-13(2)9-14(3,4)11-16(7,8)12-15(5,6)10-13/h1-8H3
Canonical SMILES	C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1

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安全信息

GHS Symbol

WGK Germany3

Hazard statements

H226 Flammable liquid and vapour 易燃液体和蒸气
H361 Suspected of damaging fertility or the unborn child 怀疑对生育能力或未出生婴儿造成伤害
H413 Maycauselonglastingharmfuleffectstoaquaticlife 可能对水生生物造成长期持续有害影响。

Personal Protective Equipment Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter

Hazard Codes 3

RTECSGZ4397000

Precautionary statements

P201 Obtain special instructions before use. 使用前获取专门指示。
P202 Do not handle until all safety precautions have been read and understood. 已阅读并理解所有的安全预防措施之前，切勿操作。
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. 远离热源/火花/明火/热的表面。——禁止吸烟。
P233 Keep container tightly closed. ?保持容器密闭。
P240 Ground/bond container and receiving equipment. 与地面接触/连接集装箱和接受设备。
P241+P242+P243
P261 Avoid breathing dust/fume/gas/mist/vapours/spray. 避免吸入粉尘/烟/气体/烟雾/蒸汽/喷雾。
P264 Wash hands thoroughly after handling. 处理后要彻底洗净双手。
P270 Do not eat, drink or smoke when using this product. 使用本产品时不要吃东西，喝水或吸烟。
P273 Avoid release to the environment. 避免释放到环境中。
P280 Wear protective gloves/protective clothing/eye protection/face protection. 戴防护手套/防护服/眼睛的保护物/面部保护物。
P281 Use personal protective equipment as required. 使用所需的个人防护装备。
P301+P312+P330
P302+P352+P312+P361+P364
P303+P361+P353
P305+P351+P338
P308+P313
P332+P313
P337+P313
P370+P378
P403+P235
P405 Store locked up. 上锁保管。
P501 Dispose of contents/container to..… 处理内容物/容器.....

Signal word Warning

UN Number 1992 1993

Risk Statements

R10 Flammable 易燃
R36/37/38 Irritating to eyes, respiratory system and skin 对眼睛、呼吸系统和皮肤有刺激性
R53 May cause long-term adverse effects in the aquatic environment 对水生环境有长期的有害作用
R62 Possible risk of impaired fertility 有削弱生殖能力的危险

Safety Statements

S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice 眼睛接触后，立即用大量水冲洗并征求医生意见；
S36/37 Wear suitable protective clothing and gloves 穿戴适当的防护服和手套；
S36/37/39 Wear suitable protective clothing, gloves and eye/face protection 穿戴适当的防护服、手套和眼睛/面保护；
S46 If swallowed, seek medical advice immediately and show this container or label 食入时，立即求医并出示容器/标签；
S51 Use only in well-ventilated areas 仅在通风良好的场所使用；
S61 Avoid release to the environment. Refer to special instructions/safety data sheet 避免释放到环境中，参考特别指示/安全收据说明书；

Storage condition 2-8°C {LY} 2-8°C Moisture Sensitive {} {LY} 2-8°C {} {} {LY} 2-8°C {} {} {} {LY} 2-8°C {} {} {} {} {LY} 2-8°C {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} 2-8°C {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} { {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {

Packing GroupIII

Hazard Class3/6.1

TYPE OF TEST            : LCLo - Lowest published lethal concentration
ROUTE OF EXPOSURE       : Inhalation
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 48 gm/m3/8H
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   NTIS** National Technical Information Service.  (Springfield, VA 22161)
   Formerly U.S. Clearinghouse for Scientific & Technical Information.
   Volume(issue)/page/year: OTS0538262

TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Administration onto the skin
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 1770 mg/kg
TOXIC EFFECTS :
   Behavioral - tremor
   Gastrointestinal - changes in structure or function of salivary glands
   Liver - other changes
REFERENCE :
   NTIS** National Technical Information Service.  (Springfield, VA 22161)
   Formerly U.S. Clearinghouse for Scientific & Technical Information.
   Volume(issue)/page/year: OTS0538262

TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 1540 mg/kg
TOXIC EFFECTS :
   Behavioral - tremor
REFERENCE :
   NTIS** National Technical Information Service.  (Springfield, VA 22161)
   Formerly U.S. Clearinghouse for Scientific & Technical Information.
   Volume(issue)/page/year: OTS0538262

TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Administration onto the skin
SPECIES OBSERVED        : Rodent - rabbit
DOSE/DURATION           : 794 uL/kg
TOXIC EFFECTS :
   Kidney, Ureter, Bladder - hematuria
REFERENCE :
   NTIS** National Technical Information Service.  (Springfield, VA 22161)
   Formerly U.S. Clearinghouse for Scientific & Technical Information.
   Volume(issue)/page/year: OTS0538262

其他信息

用途二:用作制备硅油中间体，也用于无线电零件的绝缘、防潮等
用途四:该品为硅油，硅橡胶的中间体。
Sigma Aldrich:556-67-2(sigmaaldrich)
Alfa Aesar:八甲基环四硅氧烷,98% Octamethylcyclotetrasiloxane, 98%(556-67-2)
八甲基环四硅氧烷价格(试剂级):更新日期产品编号产品名称包装价格 2014/06/02 O0142 八甲基环四硅氧烷 Octamethylcyclotetrasiloxane 500ML 1780元 2014/06/02 O0142 八甲基环四硅氧烷 Octamethylcyclotetrasiloxane 25ML 334元 2010/06/21 216470250 八甲基环四硅氧烷 Octamethylcyclotetrasiloxane 98% 25 GR 278元
方法一:将二甲基二氯硅烷滴加入水中，温度维持在30-40℃，分层，放去酸水，油状物用氢氧化钠溶液水解，将水解物和0.5%-2%氢氧化钾加入裂解釜内，于120-140℃、99.8kPa真空度下进行裂解。裂解物进行分馏，收集173-176℃馏分而得八甲基环四氧硅烷。
图谱信息:八甲基环四硅氧烷(556-67-2)红外图谱(IR2) 八甲基环四硅氧烷(556-67-2)红外图谱(IR1) 八甲基环四硅氧烷(556-67-2)核磁图( 1 HNMR) 八甲基环四硅氧烷(556-67-2)核磁图( 13 CNMR) 八甲基环四硅氧烷(556-67-2)质谱(MS)
蒸气密度:1 (vs air)
上游原料:二氯二甲基硅烷 --> 水解物
用途三:用于制造高抗撕硅橡胶制品，也用于合成其他高分子化合物
TCI Shanghai:八甲基环四硅氧烷 Octamethylcyclotetrasiloxane,>;98.0%(GC)(556-67-2)
下游产品:硅油 --> 甲基苯基二甲氧基硅烷 --> 有机硅柔软剂 RS --> 氨基硅油 --> 聚二甲基硅氧烷 --> 107室温硫化硅橡胶 --> 羟基硅油乳液 --> 聚二甲基硅氧烷 --> 有机硅防水剂 --> α-氢-ω-羟基-聚二甲基硅氧烷 --> 高温硫化混炼硅橡胶 --> 聚醚改性硅油
用途一:用作有机硅的原料，也用在电子工业
Acros Organics:八甲基环四硅氧烷 Octamethylcyclotetrasiloxane, 98%(556-67-2)
敏感性:Moisture Sensitive
MOL 文件:556-67-2.mol
TSCA:Yes