Unveiling the Mysteries of Dimethyldiethoxysilane

　　Dimethyldiethoxysilane, with the molecular formula (CH3)2Si(C2H5O)2, is a colorless, transparent liquid. It is primarily used as a structure-control agent in the preparation of silicone rubber, as a chain-extending agent in the synthesis of organosilicon products, and as a raw material for silicone oil production. Inhalation of its vapor or mist can irritate the eyes, mucous membranes, and upper respiratory tract. It also causes skin irritation upon contact. Prolonged exposure may lead to symptoms such as nausea, dizziness, headaches, and gastrointestinal disturbances. The substance is highly flammable and can ignite when exposed to high heat, open flames, or strong oxidizing agents.
　　Editing Physical and Chemical Constants
　　National Standard Number 32186
　　Chinese name: Dimethyldiethoxysilane
　　Chinese aliases: Diethoxidimethylsilane; Diethoxydimethylsilane
　　Molecular formula: (CH₃)₂Si(C₂H₅O)₂
　　Molecular weight: 148.28
　　Characteristics: Colorless, transparent liquid.
　　CAS No.: 78-62-6
　　English names: dirthoxydimethylsilane; dimethyldiethoxylsilane
　　English aliases: DIETHOXYDIMETHYLSILANE; Dimethyldiethoxysilane; DIMETHYLDIETHOXYSILANE; Dimethyl diethoxy silicane; CD5600; diethoxydimethylsilane; Dimethyl-diethoxysilan; dimethylsilicondiethoxide; EXP-49; KBE22; Diethoxydimethylsilane, 97%; Dimethyldiethoxysilane, 97%; Silane, diethoxydimethyl-
　　Company technical specifications: —
　　Dimethyldiethoxysilane content (%): ≥98.5
　　Refractive index(): 1.403
　　Density (25°C): 0.899 g/cm³
　　Ethanol content (%): ≤1.0
　　Boiling point: 114°C
　　Flash point: 11°C
　　Vapor pressure: 1.33 kPa (13.3°C)
　　Boiling point: 113.5°C
　　Solubility: Miscible with most organic solvents
　　Density: relative density (water = 1) 0.87; relative density (air = 1) 5.1. Stability: stable
　　Impact on the environment
　　Health hazards
　　Routes of exposure: Inhalation, ingestion, and dermal absorption.
　　Health Hazards: Inhalation, ingestion, or skin absorption can be harmful to the body. The vapor or mist may irritate the eyes, mucous membranes, and upper respiratory tract. It also has a strong irritant effect on the skin. Prolonged exposure may cause nausea, dizziness, headaches, and gastrointestinal disturbances.
　　Security Terminology
　　S16 Keep away from sources of ignition.
　　Keep away from fire sources.
　　S26In case of eye contact, rinse immediately with plenty of water and seek medical advice.
　　If it accidentally comes into contact with your eyes, immediately rinse thoroughly with plenty of water and consult a doctor.
　　S36 Wear suitable protective clothing.
　　Wear appropriate protective clothing.
　　Risk terminology
　　R11 Highly flammable.
　　Highly flammable.
　　R36/38 Irritating to eyes and skin.
　　Irritates eyes and skin.
　　Materials and Environment
　　Acute toxicity: LD50 2980 mg/kg (oral, rats)
　　Hazardous properties: Flammable; can ignite when exposed to high heat, open flames, or strong oxidizing agents. Its vapor is heavier than air and can spread over long distances at lower elevations, potentially igniting and causing flashbacks upon encountering an open flame.
　　Combustion (decomposition) products: carbon monoxide, carbon dioxide, silicon oxide.