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16940-66-2

Name Sodium borohydride
CAS 16940-66-2
EINECS(EC#) 241-004-4
Molecular Formula BH4Na
MDL Number MFCD00003518
Molecular Weight 37.83
MOL File 16940-66-2.mol

Chemical Properties

Appearance White solid
Melting point  >300 °C (dec.) (lit.)
Boiling point  500°C
density  1.035 g/mL at 25 °C
vapor pressure  <1 hPa (25 °C)
Fp  158 °F
storage temp.  Store at RT.
form  tablets
color  White
Specific Gravity 1.4
PH 11 (10g/l, H2O, 20℃)
Stability: Stability Stable, but reacts readily with water (reaction may be violent). Incompatible with water, oxidizing agents, carbon dioxide, hydrogen halides, acids, palladium, ruthenium and other metal salts, glass. Flammable solid. Air-sensitive.
explosive limit 3.02%(V)
Water Solubility  550 g/L (25 ºC)
Sensitive  Hygroscopic
Merck  14,8592
InChIKey YOQDYZUWIQVZSF-UHFFFAOYSA-N
CAS DataBase Reference 16940-66-2(CAS DataBase Reference)
NIST Chemistry Reference Sodium tetrahydroborate(16940-66-2)
Storage Precautions Store under inert gas;Air sensitive;Moisture sensitive
EPA Substance Registry System 16940-66-2(EPA Substance)

Safety Data

Hazard Codes  F,T,N,C,Xn
Risk Statements 
R60:May impair fertility.
R61:May cause harm to the unborn child.
R15:Contact with water liberates extremely flammable gases.
R34:Causes burns.
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed .
R24/25:Toxic in contact with skin and if swallowed .
R35:Causes severe burns.
R21/22:Harmful in contact with skin and if swallowed .
R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R42/43:May cause sensitization by inhalation and skin contact .
R49:May cause cancer by inhalation.
R63:Possible risk of harm to the unborn child.
R62:Possible risk of impaired fertility.
R36/38:Irritating to eyes and skin .
R43:May cause sensitization by skin contact.
Safety Statements 
S53:Avoid exposure-obtain special instruction before use .
S43:In case of fire, use ... (indicate in the space the precise type of fire-fighting equipment. If water increases the risk add-Never use water) .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S22:Do not breathe dust .
S50:Do not mix with ... (to be specified by the manufacturer) .
S36/37:Wear suitable protective clothing and gloves .
RIDADR  UN 3129 4.3/PG 3
WGK Germany  2
RTECS  ED3325000
10-21
Autoignition Temperature 220 °C
TSCA  Yes
HazardClass  4.3
PackingGroup  I
HS Code  28500090
Safety Profile
Poison by ingestion and intraperitoneal routes. A strong alkali. A severe eye, skin, and mucous membrane irritant. Ignites in air above 288’C when exposed to spark. Potentially explosive reaction with aluminum chloride + bis(2-methoxyethyl) ether. Reacts with ruthenium salts to form a solid product which explodes when touched or on contact with water. Reacts to form dangerously explosive hydrogen gas on contact with alkali, water and other protic solvents (e.g., methanol, ethanol, ethylene glycol, phenol), aluminum chloride + bis(2methoxyethy1)ether. Reacts violently with anhydrous acids (e.g., sulfuric, phosphoric, fluorophosphoric) to form diborane. Violent exothermic reaction with dimethyl formamide has caused industrial explosions. Mixtures with sulfuric acid may ignite. Incompatible with palladium, diborane + bis(2-methoxyethyl) ether, polyglycols, dimethylacetamide, oxidizers, metal salts, finely divided metallic precipitates of cobalt, nickel, copper, iron, and possibly other metals. Emits flammable vapors on contact with acid fumes. Materials sensitive to polymerization under alkaline conditions, such as acrylonitrile, may polymerize upon contact with sodium borohydride. Avoid storage in glass containers. When heated to decomposition it emits toxic fumes of NanO. See also HYDRIDES, BORON COMPOUNDS, and SODIUM COMPOUNDS.
Hazardous Substances Data 16940-66-2(Hazardous Substances Data)

Hazard Information

Material Safety Data Sheet(MSDS)

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