Silane, Enriched in Silicon-28 H4Si28 32 g/mol Silane-28Si

Hazard statements (CLP)

H220, H250, H280, H332

Code

Statements

H220

Extremely flammable gas

SECTION 2: Hazards identification

NFPA Rating Emergency Overview: PYROPHORIC GAS! This product is a colorless, air-reactive gas, with a choking effect. This gas usually ignites upon contact with air, releasing a dense white cloud of amorphous silicon dioxide. Silane can react with water to form corrosive silicic acid. The primary health hazard associated with Silane is the potential for severe thermal burns from contact with flames resulting from the spontaneous ignition of this gas. Depending on the severity of the burns, such exposures can be fatal. Flame or high temperature impinging on a localized area of the cylinder of this product can cause the cylinder to burst without activating the cylinder’s relief devices. If Silane is released at high pressure or high flow velocity, a delayed detonation may occur. Silane releases which have not spontaneously ignited must be considered extremely dangerous and should not be approached. Emergency responders must have personal protective equipment and fire protection appropriate for the situation to which they are responding.

NFPA Ratings

(0 = Minimal; 1 = Slight; 2 = Moderate; 3 = Serious; 4 = Severe)

Health hazards

1 Flammability = 4 Reactivity = 3 1 Flammability = 4 Physical Hazard = 3 1 FLAMMABILITY 4 Not applicable Exposure Guidelines

HMIS® ratings

(0 = Minimal; 1 = Slight; 2 = Moderate; 3 = Serious; 4 = Severe)

Physical hazards

3 GHS-US Classification Flammable gases (Category 1), H220 Gases under pressure (Compressed gas), H280 Acute Tox. 4 (Inhalation:gas), H332 Simple Asphyxiant GHS-US Labeling: GHS02 GHS04 GHS07

Signal word

DANGER

Hazard statements

H220 - EXTREMELY FLAMMABLE GAS H250 - CATCHES FIRE SPONTANEOUSLY IF EXPOSED TO AIR H280 - CONTAINS GAS UNDER PRESSURE; MAY EXPLODE IF HEATED H332 - HARMFUL IF INHALED

Precautionary statements

P202 - Do not handle until all safety precautions have been read and understood P210 - Keep away from Heat, Open flames, Sparks, Hot surfaces. - No smoking P222 - Do not allow contact with air P261 - Avoid breathing gas P271+P403 - Use and store only outdoors or in a well-ventilated place P377 - Leaking gas fire: Do not extinguish, unless leak can be stopped safely P381 - Eliminate all ignition sources if safe to do so CGA-PG05 - Use a back flow preventive device in the piping CGA-PG06 - Close valve after each use and when empty CGA-PG10 - Use only with equipment rated for cylinder pressure CGA-PG17 - Use only with equipment purged with inert gas or evacuated prior to discharge from cylinder CGA-PG12 - Do not open valve until connected to equipment prepared for use CGA-PG18 - When returning cylinder, install leak tight valve outlet cap or plug CGA-PG02 - Protect from sunlight when ambient temperature exceeds 52°C (125°F)

Potential health effects

Inhalation In high concentrations, product may cause asphyxiation. Symptoms may include loss of mobility and/or consciousness. Victim may not be aware of asphyxiation. Asphyxiation may bring about unconsciousness without warning and so rapidly that victim may be unable to protect themselves. Skin and Eye Contact Silane reacts with water to form silicic acid, which can be irritating to the skin and eyes. Decomposition of Silane will result in the production of amorphous silicon dioxide. Skin or eye contact with particulate of amorphous silicon dioxide may be irritating. Ingestion Ingestion is not considered a potential route of exposure.

Principle Routes of Exposure

Inhalation. Target Organs: ACUTE Respiratory system, skin, eyes. CHRONIC None known Symptoms: Exposure to oxygen-deficient atmosphere may cause the following symptoms: dizziness, salivation, nausea, vomiting, loss of mobility/consciousness.

Medical Conditions Generally Aggravated by Exposure

None known

Environmental effects

Not harmful _________________________________________________________________________________________________

2.1 Classification of the substance or mixture

Gases under pressure (Compressed gas), H280 Acute Tox. 4 (Inhalation:gas), H332 Simple Asphyxiant GHS-US Labeling