Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

First-aid measures

Health Hazards:
Corrosive. Causes severe eye and skin burns. Serious health hazard. May be harmful if absorbed through skin or inhaled.
Inhalation causes severe irritation of respiratory system. Liquid causes severe burns of eyes and skin. Ingestion causes severe burns of mouth and stomach.
SKIN, EYE AND RESPIRATORY IRRITATIONS Inhalation causes severe irritation of respiratory system.
Trichlorosilane is a highly flammable corrosive liquid. Its contact with water produces toxic gas, may be fatal if inhalled.
Inhalation or contact with vapours, substance or decomposition products may cause severe injury or death.
Inhalation: Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention .
The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential. Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered
Eye and Skin Contact: Corrosive, causing damage to skin, eyes and air passages.
In case of contact with substance, wipe from skin immediately; flash skin or eyes with running water for at least 20 minutes.
Skin:Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
Eyes: First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion: Rinse mouth. Do NOT induce vomiting. Give nothing to drink. Refer for medical attention.
Keep affected person warm and quiet. Get medical attention.

Fire-fighting measures

FIRE POTENTIAL A very dangerous fire hazard when exposed to heat, flame, or by chemical reaction.
Fire Hazards:
Fire or Explosion: Produce flammable and toxic gases on contact with water. May ignite on contact with water or moist air. React vigorously or explosively on contact with water. May be ignited by heat, sparks or flames. May re-ignite after fire is extinguished.
Extinguishing agents:
Extinguish with dry agent. Do not use water or foam to extinguish.
Small fires: Use dry chemical, soda ash, lime or sand.
Large fires: Dry sand, dry chemical, soda ash or lime
Fire will produce irritating, corrosive and/or toxic gases.
Runoff from fire control may cause pollution.
Fire fighters may enter the area only if they are protected from all contact with the material. Full protective clothing, including self-contained breathing apparatus, coat, pants, gloves, boots, and bands around legs, arms, and waist, should be provided. No skin surface should be exposed.
OTHER FIRE FIGHTING HAZARDS The vapor is heavier than air and may travel along the ground; distant ignition possible.
Vapor/air mixtures are explosive.

Accidental release measures

Fully encapsulating, vapour protective clothing should be worn for spills and leaks with no fire.
Eliminate all ignition sources (no smoking, flares, sparks or flames in immediate area).
Stop leaks if it is possible to do without risk.
Do not touch or walk through spilled material.
Do not get water on spilled substance or inside containers.
Contain spillage by any means available.
Check explosive limits.
Use low sparking hand tools and intrinsically safe equipment.
Absorb liquid in dry sand or any other suitable material.
Use water spray to reduce vapors or divert vapour cloud drift. Avoid allowing water runoff to contact spilled material.
Small spills: Cover with dry earth, dry sand, or other non combustible material followed with plastic sheet to minimize with plastic sheet to minimize spreading or contact with rain. Dike for later disposal; do not apply water unless directed to do so.

Evacuation: If material leaking (not on fire) consider evacuation from downwind area based on amount of material spilled, location and weather conditions.

Handling and storage

STORAGE CONDITIONS Fireproof. Separated from food and feedstuffs and incompatible materials. Cool. Dry. Well closed. Ventilation along the floor.
Store separate from water, alcohols, organic acids, peroxides, amines, and oxidizing materials. Outside or detached storage is preferred.
Store away from heat, oxidizing materials, and sunlight.
Must be stored in a dry location.
Inside storage should be in a standard flammable liquids storage warehouse, room, or cabinet.
NO open flames, NO sparks, and NO smoking. Closed system, ventilation, explosion-proof electrical equipment and lighting.
Do NOT use compressed air for filling, discharging, or handling.
STRICT HYGIENE Do not eat, drink, or smoke during work.

Transport information

Land transport (UN RTDG/ADR/RID)

UN number:
Shipping information
Proper shipping name and description:
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Marine transport (UN RTDG/IMDG)

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Exposure controls / personal protection

PROTECTIVE EQUIPMENT & CLOTHING: Positive pressure self-contained breathing apparatus.
Acid-vapor-type respiratory protection; rubber gloves; chemical workers goggles; other protective equipment as necessary to protect skin and eyes.
Local exhaust ventilation should be applied wherever there is an incidence of point source emissions or dispersion of regulated contaminants in the work area. Ventilation control of the contaminant as close to its point of generation is both the most economical and safest method to minimize personnel exposure to airborne contaminants.

Stability and reactivity

May produce corrosive solutions on contact with water. Attacks many metals in presence of water.
REACTIVITIES & INCOMPATIBILITIES: Water reactive. Hydrochloric acid is released. Reacts violently with water and aqueous solutionsn, alcohols, organic acids, peroxides, amines, and oxidizing materials.

Chlorosilanes will react with water or steam to produce heat, toxic corrosive fumes of hydrogen chloride.

Can react vigorously with oixidizing materials.
Silane and chlorosilanes can explode when mixed with various halocarbons and ignited.
DECOMPOSITION When heated to decomposition it emits toxic fumes of /hydrogen chloride/.

Disposal considerations

This substance, when discarded or disposed of, is a hazardous waste. The transportation, storage, treatment, and disposal of this waste material must be conducted in compliance with local regulations for hazardous wastes.
Disposal can occur only in properly permitted facilities. Check state and local regulation of any additional requirements for disposal conditions.