Lithium borohydride

  • Lihium tetrahydroborate
Formula
LiBH4
Structure
Description
White to gray crystalline powder, hygroscopic.
Uses
Strong reducing agent.

Registry Numbers and Inventories.
CAS
16949-15-8
EC (EINECS/ELINCS)
241-021-7
EC Class
highly flammable, corrosive
R 14/15 25 34
S 7/8 26 36/37/39 43 45
RTECS
ED2725000
RTECS class
Other
UN (DOT)
1413
Merck
13,5547
Beilstein/Gmelin
23089 (G)
Swiss Giftliste 1
G-8210
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
BH4Li
Formula mass
21.78
Melting point, °C
274 - 277
Boiling point, °C
66
Vapor pressure, mmHg
0.0075 - 0.075 (240 C)
Density
0.681 g/cm3 (25 C)
Solubility in water
Decomposes

Hazards and Protection.
Storage
Store in a cool, dry place. Do not store in direct sunlight. Store in a tightly closed container. Water free area.
B6 E
Handling
Do not allow water to get into the container because of violent reaction. Contents may develop pressure upon prolonged storage. Do not breathe dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Use only in a chemical fume hood.
Protection
Eyes: Wear chemical goggles and face shield. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear natural rubber gloves, apron, and/or clothing.
Respirators
A NIOSH/MSHA approved air purifying dust or mist respirator or European Standard EN 149.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container. Do not flush into a sewer. Scoop up with a nonsparking tool, then place into a suitable container for disposal.
Disposal code
26
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents, alcohols, acids, moist air or water, halogenated hydrocarbons.
Decomposition
Carbon monoxide, carbon dioxide, oxides of boron, borane.

Fire.
Flash Point,°C
-17
Upper exp. limit, %
75.6
Lower exp. limit, %
4
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Reacts violently with water giving off flammable gas which may explode. Extinguishing media: Do NOT use halogenated agents. Use approved class D extinguishing agents or smother with dry sand, clay, or sodium bicarbonate. Do NOT use water, carbon dioxide, or foam.
Fire potential
Produce flammable gases on contact with water.
Hazards
Produce flammable gases on contact with water. May ignite on contact with water or moist air. Some react vigorously or explosively on contact with water. May be ignited by heat, sparks or flames. May re-ignite after fire is extinguished. Some are transported in highly flammable liquids. Runoff may create fire or explosion hazard.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.
Health
2
 
Special
W

Health.
Poison_Class
2
Exposure effects
May cause liver and kidney damage. May cause anemia and other blood cell abnormalities. May cause digestive tract and cardiac disturbances.
   Ingestion
Causes gastrointestinal tract burns. Causes cough, sore throat, chest pain, and lightheadedness.
   Inhalation
Effects may be delayed. May cause irritation of the respiratory tract with burning pain in the nose and throat, coughing, wheezing, shortness of breath and pulmonary edema. Causes chemical burns to the respiratory tract. May cause abdominal pain, nausea, vomiting, and inflammation of the gums and mouth. May cause lung damage.
   Skin
Contact with skin causes irritation and possible burns, especially if the skin is wet or moist.
   Eyes
Causes eye burns. May cause irreversible eye injury.

First aid
 
   Ingestion
Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
1413
Response guide
Hazard class
4.3
Packing Group
I
 
HS Code
2850 00 20
 
Std. Transport #
4916421