Uranium Hexafluoride MSDS

Uranium Hexafluoride MSDS


 


Inorganic Chemistry 
UF6

Highly toxic, radioactive, corrosive, colorless crystals;

soluble in carbon tetrachloride, fluorocarbons,

and liquid halogens; it reacts vigorously with alcohol, water, ether,

and most metals, and it sublimes; used to separate uranium

isotopes in the gaseous-diffusion process.

 

Uranium hexafluoride (UF6), referred to as “hex” in the nuclear

industry, is a compound used in the uranium enrichment process

that produces fuel for nuclear reactors and nuclear weapons. It

forms solid grey crystals at standard temperature and pressure

(STP), is highly toxic, reacts violently with water and is corrosive to

most metals. It reacts mildly with aluminium, forming a thin surface

layer of AlF3 that resists further reaction.

 

Preparation

Milled uranium ore — U3O8 or “yellowcake” — is dissolved in nitric

acid, yielding a solution of uranyl nitrate UO2(NO3)2. Pure uranyl

nitrate is obtained by solvent extraction, then treated with

ammonia to produce ammonium diuranate (“ADU”, (NH4)2U2O7).

Reduction with hydrogen gives UO2, which is converted with

hydrofluoric acid (HF) to uranium tetrafluoride, UF4. Oxidation with

fluorine yields UF6.


Hazards

MSDS ICSC 1250

EU Index 092-002-00-3

EU classification Very toxic (T+)

Dangerous for the environment (N)

R-phrases R26/28, R33, R51/53

S-phrases (S1/2), S20/21, S45, S61

Flash point Non-flammable

International Chemical Safety Cards

URANIUM HEXAFLUORIDE ICSC: 1250

URANIUM HEXAFLUORIDE

Uranium fluoride

UF6

Molecular mass: 352.0

CAS # 7783-81-5

RTECS # YR4720000

ICSC # 1250

UN # 2978

TYPES OF HAZARD/EXPOSURE ACUTE HAZARDS/SYMPTOMS PREVENTION FIRST AID/FIRE FIGHTING

FIRE

Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.

In case of fire in the surroundings: powder, carbon dioxide, NO water.

EXPLOSION

EXPOSURE

AVOID ALL CONTACT!

IN ALL CASES CONSULT A DOCTOR!

INHALATION

Corrosive. Burning sensation. Cough. Shortness of breath.

Avoid inhalation of fine dust and mist. Closed system and ventilation.

Fresh air, rest. Artificial respiration if indicated. Refer for medical attention.

SKIN

Corrosive. Skin burns. Pain.

Protective gloves. Protective clothing.

First rinse with plenty of water, then remove contaminated clothes and rinse
again. Refer for medical attention. Wear protective gloves when administering first aid.

EYES

Corrosive. Pain. Severe deep burns.

Face shield or eye protection in combination with breathing protection if powder.

First rinse with plenty of water for several minutes (remove contact lenses if
easily possible), then take to a doctor.

INGESTION

Corrosive. Abdominal cramps. Burning sensation. Shock or collapse.

Do not eat, drink, or smoke during work. Wash hands before eating.

Rinse mouth. Do NOT induce vomiting. Give plenty of water to drink. Refer for
medical attention.

SPILLAGE DISPOSAL STORAGE PACKAGING & LABELING

Evacuate danger area! Consult an expert! Sweep spilled substance into sealable
containers, then remove to safe place (extra personal protection: complete protective clothing including

self-contained breathing apparatus). Separated from aromatic compounds, ethanol, food and feedstuffs.

Dry. Well-closed. Keep in a well-ventilated room. Unbreakable packaging; put breakable packaging into

closed unbreakable container. Do not transport with food and feedstuffs.

UN Hazard Class: 7

UN Subsidiary Risks: 8

SEE IMPORTANT INFORMATION ON BACK

ICSC: 1250 Prepared in the context of cooperation between the International
Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards

URANIUM HEXAFLUORIDE ICSC: 1250



IMPORTANT DATA FOLLOWS

PHYSICAL STATE; APPEARANCE:

COLOURLESS TO WHITE, DELIQUESCENT CRYSTALS.

PHYSICAL DANGERS:

CHEMICAL DANGERS:

The substance decomposes on heating producing toxic fumes of hydrogen fluoride
(see ICSC # 0283).

Reacts with aromatic compounds, such as benzene, toluene and xylene. Reacts
violently with water and ethanol. Attacks many metals forming

flammable/explosive gas (hydrogen – see

ICSC # 0001). Attacks plastic, rubber and coatings.

OCCUPATIONAL EXPOSURE LIMITS (OELs):

TLV (as U (soluble and insoluble compounds): ppm; 0.2 mg/m3 (as TWA); 0.6 mg/m3
(STEL) (ACGIH 1994-1995).

ROUTES OF EXPOSURE:

The substance can be absorbed into the body by inhalation and by ingestion.

INHALATION RISK:

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

EFFECTS OF SHORT-TERM EXPOSURE:

Corrosive. The substance is corrosive to the eyes, the skin and the respiratory
tract. The substance may cause effects on the kidneys , resulting in kidney impairment and tissue

lesions. Exposure at low level may result in death.

PHYSICAL PROPERTIES

Boiling point: 56°C

Relative density (water = 1): 5.09

Solubility in water, g/100 ml at 20°C: reaction

Vapour pressure, kPa at 20°C: 14.2

ENVIRONMENTAL DATA N O T E S

Do NOT take working clothes home.

Shipping name: UN 2978: Uranium hexafluoride (low specific activity);

UN 2977: Uranium hexafluoride, fissile (containing more than 1% (235) uranium).

Transport Emergency Card: TEC (R)-70G06-2

  • International Bio-Analytical Industries, Inc. is the worlds leading manufacturer of specialty Uranium compounds and has now entered into full production of Uranyl Acetate, Uranyl Nitrate, Uranium Tetra Fluoride, Uranium Oxide and other fine specialty uranium compounds and reagents manufactured exclusively from depleted uranium.
     
    Should you require further information and pricing regarding our fine specialty chemical compounds formulated from depleted uranium then please contact our manufacturing department by submitting the following form.

     

    Contact Form




    Your Name (required)

    Your Email (required)

    Your Job/Discipline

    Employer/Work Location

    Country

    Phone

    Subject

    Your Message

    Enter the following characters below
    captcha