سدیم بورهیدرید 818823 مرک

Product Information
CAS number	16940-66-2
EC number	241-004-4
Hill Formula	H₄BNa
Chemical formula	NaBH₄
Molar Mass	37.83 g/mol
HS Code	2850 00 20

Applications
Application	Sodium borohydride (tablets) for synthesis. CAS No. 16940-66-2, EC Number 241-004-4.

Physicochemical Information
Boiling point	500 °C (decomposition)
Density	1.07 g/cm3 (20 °C)
Explosion limit	3.02 %(V)
Flash point	69 °C not applicable
Ignition temperature	220 °C
Melting Point	>360 °C (slow decomposition)
pH value	11 (10 g/l, H₂O, 20 °C)
Vapor pressure	<1 hPa (25 °C)
Bulk density	350 - 500 kg/m3

Toxicological Information
LD 50 oral	LD50 Rat 160 mg/kg
LD 50 dermal	LD50 Rabbit 230 mg/kg

Safety Information according to GHS
Hazard Pictogram(s)
Hazard Statement(s)	H360FD: May damage fertility. May damage the unborn child. H260: In contact with water releases flammable gases which may ignite spontaneously. H301: Toxic if swallowed. H314: Causes severe skin burns and eye damage. EUH014: Reacts violently with water.
Precautionary Statement(s)	P201: Obtain special instructions before use. P280: Wear protective gloves/ protective clothing/ eye protection/ face protection. P301 + P330 + P331: IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P308 + P310: IF exposed or concerned: immediately call a POISON CENTER or doctor/ physician. P402 + P404: Store in a dry place. Store in a closed container.
RTECS	ED3325000
Storage class	4.3 Hazardous materials, which set free flammable gases upon contact with water
WGK	WGK 2 water endangering
Disposal	26 Alkali and alkaline-earth metals should be taken up in an inert solvent and neutralized by adding 2-propanol (Cat. No. 100995) dropwise with stirring. Should the reaction be more violent than expected, conversion should be carried out with tert-butanol or octanol. Caution: This reaction produces hydrogen, which can form explosive mixtures; take necessary precautions. When the reaction has ceased, add water dropwise; neutralize; container D. In the case of alkali or alkaline-earth borohydrides, add methanol (Cat. No. 106008) with stirring; in the case of alkali or alkaline-earth amides and hydrides, organoaluminium and organotin hydrides, add 2-propanol (Cat. No. 100995) dropwise. The substances, which are usually in solid form, should be previously suspended in an ether! When the respective reaction has ceased, hydrolize with water; then neutralize. Container D or E. Lithium aluminium hydride must also be destroyed by slurrying in an ether. Under an inert gas and with thorough stirring, add dropwise a 1:4 mixture of ethyl acetate (Cat. No. 822277) and the ether used to prepare the slurry. Always ensure thorough mixing (stirring)! Container A.

Safety Information
Hazard Symbols	Flammable Toxic Corrosive
Categories of danger	highly flammable, toxic, corrosive
R Phrase	R 60-61-25-14/15-34 May impair fertility.May cause harm to the unborn child.Also toxic if swallowed.Reacts violently with water, liberating extremely flammable gases.Causes burns.
S Phrase	S 14-26-36/37/39-43-45-53 Keep away from oxidising and acidic substances as well as heavy-metal compounds.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable protective clothing, gloves and eye/face protection.In case of fire, use sand. Never use water.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).Avoid exposure - obtain special instructions before use.

Storage and Shipping Information
Storage	Store below +30°C.

Transport Information
Declaration (railroad and road) ADR, RID	UN 1426 , 4.3, I
Declaration (transport by air) IATA-DGR	UN 1426 , 4.3, I
Declaration (transport by sea) IMDG-Code	UN 1426 , 4.3, I

Specifications
Assay (hypochlorite)	≥ 96.0 %
Identity (ICP-OES)	passes test