99% Chlorotrimethylsilane CAS 75-77-4 Liquid

Trimethylchlorosilane (Chlorotrimethylsilane | TMCS)

CAS No. 75-77-4

Molecular Formula C₃H₉ClSi

Molecular Weight 108.64 g/mol

Product Properties

Colorless to light yellow transparent liquid, volatile, with a pungent odor. Reacts violently with water, releasing hydrogen chloride. Soluble in benzene, ether, and perchloroethylene.

| Parameter | Specification |

| :--- | :--- |

| Assay (Main Content) | ≥99.0% (GC) |

| Appearance | Colorless transparent liquid |

| Boiling Point | 57°C |

| Density (20°C) | 0.856–0.858 g/cm³ |

| Flash Point | –18°C to –28°C |

Storage

Store in a cool, dry, well-ventilated area away from fire, heat, and direct sunlight. Keep tightly sealed and strictly moisture-proof. Store separately from oxidizers, acids, and alkalis.

Packing

Available in 170 kg net weight drums (plastic or lined steel drums), or as per customer requirements.

Application

- Silylation Reagent: Introduces trimethylsilyl (TMS) protecting groups for alcohols, carboxylic acids, and amines in organic synthesis.

- Polymer Intermediate: Acts as an end-capping agent in silicone oil and silicone polymer production to regulate molecular weight.

- Chemical Intermediate: Key raw material for hexamethyldisilazane, hexamethyldisiloxane, and other organosilicon compounds.

- Chromatography: Derivatization reagent for GC analysis of biochemical samples.

Product Specification

| Item | Specification |

| :--- | :--- |

| Product Name | Trimethylchlorosilane |

| Synonyms | Chlorotrimethylsilane, TMCS, TMS Chloride |

| CAS No. | 75-77-4 |

| Molecular Formula | C₃H₉ClSi |

| Molecular Weight | 108.64 g/mol |

| Assay (GC) | ≥99.0% |

| Appearance | Colorless transparent liquid |

| Storage Condition | Cool, dry, ventilated area; moisture-proof |

| Packing | 170 kg/drum or customized |