trimethoxysilyl radical | 99702-90-6

• 物质功能分类: 化学试剂 - 有机试剂 - 硅烷
• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机类金属化合物
• 英文名称: trimethoxysilyl radical
• 英文别名: Trimethoxysilane
• CAS: 99702-90-6；2487-90-3
• 化学式: C₃H₉O₃Si
• 分子量: 121.188
• InChiKey: PZJJKWKADRNWSW-UHFFFAOYSA-N

物化性质

• 熔点：
  −115 °C(lit.)
• 沸点：
  81 °C(lit.)
• 密度：
  0.96 g/mL at 25 °C(lit.)
• 蒸气密度：
  >1 (vs air)
• 闪点：
  24 °F
• 溶解度：
  可溶于氯仿（少量）、甲醇（少量）
• 物理描述：
  Trimethoxysilane appears as a colorless liquid. Slightly soluble in water and denser than water. Hence floats on water. Very toxic by ingestion, inhalation or skin absorption. May also be corrosive to skin and eyes.
• 颜色/状态：
  Liquid
• 蒸汽压力：
  76 mm Hg at 25 °C (ext)
• 分解：
  When heated to decomp, it emits acrid smoke and irritating fumes.
• 燃烧热：
  -2.46X10-9 J/kmol
• 聚合：
  Hazardous polymerization may occur when exposed to heat or other catalysts.
• 折光率：
  Index of refraction: 1.3687 at 20 °C
• 保留指数：
  650

计算性质

• 辛醇/水分配系数(LogP)：
  -0.09
• 重原子数：
  7
• 可旋转键数：
  3
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  27.7
• 氢给体数：
  0
• 氢受体数：
  3

ADMET

毒理性

• 副作用

Dermatotoxin - 皮肤烧伤。 Lacrimator (Lachrymator) - 刺激眼睛并引起流泪的物质。 Toxic Pneumonitis - 由于吸入金属烟雾或有毒气体和蒸气引起的肺部炎症。

Dermatotoxin - Skin burns. Lacrimator (Lachrymator) - A substance that irritates the eyes and induces the flow of tears. Toxic Pneumonitis - Inflammation of the lungs induced by inhalation of metal fumes or toxic gases and vapors.

来源:Haz-Map, Information on Hazardous Chemicals and Occupational Diseases

毒理性

• 毒性数据

大鼠LC50 = 42 ppm/4小时

LC50 (rat) = 42 ppm/4h

来源:Haz-Map, Information on Hazardous Chemicals and Occupational Diseases

毒理性

• 解毒与急救

立即急救：确保已经进行了充分去污。如果患者停止呼吸，开始人工呼吸，最好使用需求阀复苏器、气囊面罩装置或口袋面罩，按训练进行操作。根据需要执行心肺复苏。立即用缓慢流动的水冲洗受污染的眼睛。不要催吐。如果发生呕吐，让患者前倾或置于左侧（如果可能的话，头部向下）以保持呼吸道畅通，防止吸入。保持患者安静，维持正常体温。寻求医疗帮助。/硅烷、氯硅烷及相关化合物/

Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand-valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR as necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. /Silane, Chlorosilane, and Related Compounds/

来源:Hazardous Substances Data Bank (HSDB)

毒理性

• 解毒与急救

基本治疗：建立专利气道（如需要，使用口咽或鼻咽气道）。如有必要，进行吸痰。观察呼吸不足的迹象，如有必要，协助通气。通过非重复呼吸面罩以10至15升/分钟的速度给予氧气。监测肺水肿，并在必要时进行治疗……。预期可能出现癫痫，并在必要时进行治疗……。监测休克，并在必要时进行治疗……。对于眼睛污染，立即用水冲洗眼睛。在运输过程中，用0.9%的生理盐水（NS）连续冲洗每只眼睛……。不要使用催吐剂。对于摄入，如果患者能够吞咽、有强烈的呕吐反射且不流口水，则用水冲洗口腔，并给予5毫升/千克，最多200毫升的水进行稀释。给予活性炭（请参阅第三部分的摄入协议……）。在去污后，用无菌敷料覆盖皮肤烧伤……。/硅烷、氯硅烷及其相关化合物/

Basic treatment: Establish a patent airway (oropharyngeal or nasopharyngeal airway, if needed). Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Anticipate seizures and treat if necessary ... . Monitor for shock and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with 0.9% saline (NS) during transport ... . Do not use emetics. For ingestion, rinse mouth and administer 5 ml/kg up to 200 ml of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool. Administer activated charcoal (refer to ingestion protocol in Section Three ... . Cover skin burns with sterile dressings after decontamination ... . /Silane, Chlorosilane, and Related Compounds/

来源:Hazardous Substances Data Bank (HSDB)

毒理性

• 解毒与急救

高级治疗：对于昏迷、严重肺水肿或严重呼吸困难的病人，考虑进行口咽或鼻咽气管插管以控制气道。在上呼吸道阻塞的第一个迹象出现时，可能需要尽早进行插管。使用气囊面罩装置的正压通气技术可能有益。考虑对肺水肿进行药物治疗...。监测心率和必要时治疗心律失常...。开始静脉输注D5W/SRP：“保持开放”，最小流量/。如果出现低血容量的迹象，使用0.9%生理盐水（NS）或乳酸钠林格氏液（LR）。对于伴有低血容量症状的低血压，谨慎给予液体。如果病人在正常液体容量下出现低血压，考虑使用血管加压药。注意液体过载的迹象...。用地西泮或劳拉西泮治疗癫痫...。使用丙美卡因氢氯化物协助眼部冲洗...。/硅烷、氯硅烷及其相关化合物/

Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious, has severe pulmonary edema, or is in severe respiratory distress. Early intubation at the first sign of upper airway obstruction may be necessary. Positive-pressure ventilation techniques with a bag-valve-mask device may be beneficial. Consider drug therapy for pulmonary edema ... . Monitor cardiac rhythm and treat arrhythmias if necessary ... . Start IV administration of D5W /SRP: "To keep open", minimal flow rate/. Use 0.9% saline (NS) or lactated Ringer's (LR) if signs of hypovolemia are present. For hypotension with signs of hypovolemia, administer fluid cautiously. Consider vasopressors if patient is hypotensive with a normal fluid volume. Watch for signs of fluid overload ... . Treat seizures with diazepam or lorazepam ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Silane, Chlorosilane, and related compounds/

来源:Hazardous Substances Data Bank (HSDB)

安全信息

• TSCA：
  Yes
• 危险等级：
  6.1(a)

制备方法与用途

用途是合成功能性有机硅化合物的重要中间体，广泛应用于粘合剂、涂料以及有机硅改性高聚物中，还可作为加氢还原试剂。