Octadecyltrichlorosilane
Agent Name
Octadecyltrichlorosilane
CAS Number
112-04-9
Formula
C18-H37-Cl3-Si
Major Category
Toxic Gases & Vapors
Synonyms
Silane, octadecyltrichloro-; Silane, trichlorooctadecyl-; Trichloro(octadecyl)silane; [ChemIDplus] n-Octadecyltrichlorosilane; Octadeciltriclorosilano (Spanish DOT); Octadecyltrichlorosilane (French DOT); OTS; Stearyltrichlorosilane; Trichlorooctadecylsilane; [CAMEO] UN1800
Category
Chlorosilanes
Description
Colorless liquid with a pungent odor; [CAMEO]
Sources/Uses
Used as an intermediate for silicones; [HSDB]
Comments
Reacts violently with water, steam, or moisture evolving heat, hydrogen gas (combustible), and hydrogen chloride gas (corrosive); Produces hydrogen chloride gas on contact with air; Corrosive to tissue; [CAMEO] Can cause second- and third-degree burns from brief contact; Vapors are severely irritating to eyes and throat and may cause injury to eyes and lungs; [HSDB] Reacts violently with water; Causes burns; Inhalation may cause corrosive injuries to upper respiratory tract and lungs; [Sigma-Aldrich MSDS]
Biomedical References
Exposure Assessment
TIH
Yes
Dangerous When Wet
Yes
Vapor Pressure
9.92E-06 mm Hg
Explanatory Notes
Not TIH in land-based spills, but TiH substance released when spilled in water; [ERG 2016]
NFPA
high ambient temp required
Adverse Effects
Toxic Pneumonitis
Yes
Dermatotoxin
Skin burns
Diseases, Processes, and Activities Linked to This Agent
Diseases
Occupational diseases associated with exposure to this agent:
Processes
Industrial Processes with risk of exposure: