ICSC 1250 - URANIUM HEXAFLUORIDE

URANIUM HEXAFLUORIDE	ICSC: 1250 (June 2011)
Uranium fluoride

CAS #: 7783-81-5

UN #: 2978

EC Number: 232-028-6

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.		NO water. Use powder, carbon dioxide.

AVOID ALL CONTACT! PREVENT DISPERSION OF DUST! IN ALL CASES CONSULT A DOCTOR!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Cough. Burning sensation. Shortness of breath. Laboured breathing.	Use closed system, ventilation and breathing protection.	Fresh air, rest. Half-upright position. Refer immediately for medical attention.
Skin	Redness. Pain. Serious skin burns.	Protective gloves. Protective clothing.	First rinse with plenty of water for at least 15 minutes, then remove contaminated clothes and rinse again. Wear protective gloves when administering first aid. Apply calcium gluconate to the burn areas. Refer immediately for medical attention.
Eyes	Pain. Severe deep burns.	Wear face shield or eye protection in combination with breathing protection.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion	Burns in mouth and throat. Sore throat. Abdominal pain. Shock or collapse.	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Do NOT induce vomiting. Give one or two glasses of water to drink. Refer immediately for medical attention.

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Vacuum with specialist equipment (See Notes) or carefully sweep into dry or sealable containers. Carefully collect remainder. Then store and dispose of according to local regulations.	According to UN GHS Criteria DANGER May be corrosive to metals Causes severe skin burns and eye damage Causes damage to respiratory tract Transportation UN Classification UN Hazard Class: 7; UN Subsidiary Risks: 6.1 and 8
STORAGE
Store only in original container. Separated from acids and organic compounds. Dry. Well closed. Keep in a well-ventilated room. Store in an area without drain or sewer access.
PACKAGING
Unbreakable packaging. Put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs.

URANIUM HEXAFLUORIDE

ICSC: 1250

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS-TO-WHITE DELIQUESCENT CRYSTALS. Physical dangers No data. Chemical dangers Decomposes on heating. This produces toxic fumes of hydrogen fluoride (see ICSC 0283). Reacts violently with water, strong acids and organic compounds. This generates fire and explosion hazard.	Formula: UF₆ Molecular mass: 352.0 Sublimation point: 56°C Relative density (water = 1): 5.1 Solubility in water at 20°C: reaction Vapour pressure, kPa at 20°C: 14.2

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS-TO-WHITE DELIQUESCENT CRYSTALS.

Physical dangers
No data.

Chemical dangers
Decomposes on heating. This produces toxic fumes of hydrogen fluoride (see ICSC 0283). Reacts violently with water, strong acids and organic compounds. This generates fire and explosion hazard.

Formula: UF₆
Molecular mass: 352.0
Sublimation point: 56°C
Relative density (water = 1): 5.1
Solubility in water at 20°C: reaction
Vapour pressure, kPa at 20°C: 14.2

EXPOSURE & HEALTH EFFECTS
Routes of exposure Serious local effects and systemic effects by all routes of exposure. Effects of short-term exposure Corrosive. Inhalation may cause severe swelling of the throat. This may result in asphyxia. Inhalation may cause lung oedema, but only after initial corrosive effects on eyes and/or airways have become manifest. Exposure at high levels could cause death. Exposure could cause severe lung damage. Medical observation is indicated. See Notes.	Inhalation risk A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C. Effects of long-term or repeated exposure Cumulative effects are possible.

EXPOSURE & HEALTH EFFECTS

Routes of exposure
Serious local effects and systemic effects by all routes of exposure.

Effects of short-term exposure
Corrosive. Inhalation may cause severe swelling of the throat. This may result in asphyxia. Inhalation may cause lung oedema, but only after initial corrosive effects on eyes and/or airways have become manifest. Exposure at high levels could cause death. Exposure could cause severe lung damage. Medical observation is indicated. See Notes.

Inhalation risk
A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C.

Effects of long-term or repeated exposure
Cumulative effects are possible.

OCCUPATIONAL EXPOSURE LIMITS
TLV: (as U): 0.2 mg/m³, as TWA; 0.6 mg/m³ as STEL; A1 (confirmed human carcinogen); BEI issued

ENVIRONMENT

NOTES
The health effects on this card apply to uranium hexafluoride of low radiologic activity. NEVER use a domestic-type vacuum cleaner to vacuum the substance, only use specialist equipment. 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 by an authorized person, should be considered. Do NOT take working clothes home. Shipping name: UN 2978: radioactive material, uranium hexafluoride, non fissile or fissile-excepted; UN 2977: radioactive material, uranium hexafluoride, fissile.

NOTES

The health effects on this card apply to uranium hexafluoride of low radiologic activity.
NEVER use a domestic-type vacuum cleaner to vacuum the substance, only use specialist equipment.
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 by an authorized person, should be considered.
Do NOT take working clothes home.
Shipping name: UN 2978: radioactive material, uranium hexafluoride, non fissile or fissile-excepted; UN 2977: radioactive material, uranium hexafluoride, fissile.

ADDITIONAL INFORMATION

EC Classification
Symbol: T+, N; R: 26/28-33-51/53; S: (1/2)-20/21-45-61; Note: A

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    See Also:
       Toxicological Abbreviations