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Sodium hydride
Cas No: 7646-69-7
No Data 1 Gram 1-1000 Metric Ton/Day Hangzhou Dayangchem Co., Ltd. Contact Supplier
Sodium hydride CAS NO.7646-69-7
Cas No: 7646-69-7
No Data No Data No Data Shanghai Ingredients Technology Co., Ltd. Contact Supplier
Fresh In Stock:Sodium Hydride with BEST PRICE
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USD $ 1.0-1.0 / Kilogram 1 Kilogram 1000 Kilogram/Day Scale Chemical Corporation Contact Supplier
Sodium hydride
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USD $ 2.0-3.0 / Kilogram 1 Kilogram 50 Metric Ton/Day EAST CHEMSOURCES LIMITED Contact Supplier
High quality Sodium Hydride supplier in China
Cas No: 7646-69-7
No Data No Data No Data Simagchem Corporation Contact Supplier
Sodium hydride CAS: 7646-69-7
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USD $ 1.0-2.0 / Metric Ton 5 Metric Ton 1000 Metric Ton/Year Henan Sinotech Import&Export Corporation Contact Supplier
Sodium hydride
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No Data 1 Kilogram 300 Kilogram/Month HENAN SUNLAKE ENTERPRISE CORPORATION Contact Supplier
High quality/Best price/In stock Sodium hydride
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USD $ 1.0-1.0 / Kilogram 1 Kilogram 200 Metric Ton/Day Crovell Biotech (Hebei) Co., Ltd. Contact Supplier
TIANFU-CHEM CAS:7646-69-7 Sodium hydride
Cas No: 7646-69-7
No Data 1 Gram 1 Metric Ton/Day Henan Tianfu Chemical Co., Ltd. Contact Supplier
Paste Reductant 60% Sodium Hydride(NaH) CAS: 7646-69-7
Cas No: 7646-69-7
No Data 100 Gram 20000 Kilogram/Day Hubei XinRunde Chemical Co., Ltd Contact Supplier

7646-69-7 Usage

Uses

At low temperatures where reducing properties of sodium are undesirable as in the condensation of ketones and aldehydes with acid esters; in solution with molten sodium hydroxide for the reduction of oxide scale on metals; at high temperatures as a reducing agent and reduction catalyst.

General Description

A silvery to whitish powder or slurry in oil. Used to make other chemicals.

Health Hazard

SOLID: Will burn skin and eyes. Harmful if swallowed.

Air & Water Reactions

Highly flammable. Ignites or explodes in contact with air of high humidity [Bretherick 1979 p. 107]. Reacts violently with water producing a caustic solution (NaOH) and hydrogen (H2). Heat of reaction may ignite the hydrogen.

Physical properties

Sodium hydride belongs to ionic crystals, salt compounds in which the hydrogen is negative monovalent ions. When heating, it is unstable, decomposition without melting, hydrolysis reaction of sodium hydride with water to prepare sodium hydroxide and hydrogen.
Pure sodium hydride is silver needle-like crystals, commercially available sodium hydride merchandise usually is subtle gray crystalline powder, the proportion of sodium hydride is 25% to 50% dispersed in oil. The relative density is 0.92. Sodium hydride is crystalline rock salt type structure (lattice constant a = 0.488nm), and as lithium hydride in ionic crystalline, hydrogen ion is existent in anion form. Heat of formation is 69.5kJ · mol-1, at the high temperature of 800 ℃, it decomposes into metallic sodium and hydrogen; decomposes explosively in water; reacts violently with lower alcohols;dissolves in molten sodium and molten sodium hydroxide; insoluble in liquid ammonia, benzene, carbon tetrachloride and carbon disulfide.

Preparation

Sodium hydride is prepared by passing hydrogen gas into molten sodium metal dispersed in oil. Alternatively, the hydride can be made by passing hydrogen into sodium dispersed over the surface of an inert solid, such as, hydrocarbon above 200°C
2Na + H2 → 2NaH

Reactivity Profile

Sodium hydride is a powerful reducing agent. Attacks SiO2 in glass. Ignites on contact with gaseous F2, Cl2, Br2, and I2 (the last at temperatures exceeding 100°C), especially in the presence of moisture, to form HF, HCl, HBr, and HI [Mellor 2:483 1946-47]. Reacts with sulfur to give Na2S and H2S [Bretherick 1979 p. 107]. Can react explosively with dimethyl sulfoxide [Chem. Eng. News 44(24):7 1966]. Reacts vigorously with acetylene, even at -60°C [Mellor 2:483 1946-47]. Spontaneously flammable in fluorine. Reaction with dimethylformamide, when heated, runs away [Chem. Eng. News, 1982, 60(28), 5]. Initiates a polymerization reaction in ethyl-2,2,3-trifluoropropionate such that the ester decomposed violently [Bretherick 5th ed. 1995]. Presence in the reaction of diethyl succinate and ethyl trifluoroacetate, has twice caused explosions [Chem. Brit., 1983, 19, 645].

Chemical Properties

Grey solid

Fire Hazard

FLAMMABLE. MAY EXPLODE ON CONTACT WITH WATER. Accidental contact with water used to extinguish surrounding fire will result in the release of hydrogen gas and possible explosion.

Flammability hazard characteristics

Encountering Water or moist air to emit hydrogen and can be combustible

Uses

Sodium hydride can be used for condensation and alkylation reaction and can be used as a polymerization catalyst, used for the manufacture of drug synthetic and used in fragrance industry, used for manufacturing boron hydrides, used as metal surface rust, reducing agents, condensing agent, desiccant and Clay Johnson's reagents.
Used as a condensing agent, an alkylating agent and a reducing agent, etc.
It is an important reductant for Pharmaceutical, perfumes, dyes, but also as a drying agent, an alkylating agent, etc.

Storage Characteristics

Treasury ventilation low-temperature drying, stored separately from oxidants, halogens, strong acids.

Related chemical reaction

Sodium hydride is a strong reducing agent, For example, titanium tetrachloride can reduced to metallic titanium at 400 ℃: TiCl4 == 4NaH + Ti + 4NaCl + 2H2.
At atmospheric pressure and heated to 425 ℃, it decomposes to generate hydrogen gas. And it can violently react with water, even causes a fire, and produces sodium hydroxide and hydrogen. It reacts with liquild ammonia to prepare amine salt (sodium amide) and hydrogen. NaH + NH3-(H2) → NaNH2 + H2.
At a high temperature, sodium hydride also reacts with halogen, sulfur vapor, sulfur dioxide and carbon dioxide. It is highly reductive, liberates the metal from metal oxides, metal chlorides.
TiCl4 + 4NaH → Ti + NaCl + 2H2.
Sodium hydride reacts with boron trifluoride to generate diborane.
2BF3 + 6NaH → B2H6 + 6NaF.
Sodium hydride is stable in dry air below 230 ℃, over this temperature it will burn into sodium oxide. If there is the presence of trace amounts of sodium, even at low temperatures it is also easy to fire. When firing, water and organic fire extinguishing agent must not be used.
InChI:InChI=1/Na.H/rHNa/h1H

7646-69-7 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
Aldrich (71620)  Sodiumhydride  powder (moistened with oil), in soluble SecuBags®, 55-65% (gas-volumetric) 7646-69-7 71620-500G 827.19CNY Detail
Aldrich (71620)  Sodiumhydride  powder (moistened with oil), in soluble SecuBags®, 55-65% (gas-volumetric) 7646-69-7 71620-100G 281.97CNY Detail
Aldrich (71620)  Sodiumhydride  powder (moistened with oil), in soluble SecuBags®, 55-65% (gas-volumetric) 7646-69-7 71620-50G 225.87CNY Detail
Aldrich (452912)  Sodiumhydride  60 % dispersion in mineral oil 7646-69-7 452912-5KG 6,990.75CNY Detail
Aldrich (452912)  Sodiumhydride  60 % dispersion in mineral oil 7646-69-7 452912-2KG 2,887.56CNY Detail
Aldrich (452912)  Sodiumhydride  60 % dispersion in mineral oil 7646-69-7 452912-1KG 1,850.94CNY Detail
Aldrich (452912)  Sodiumhydride  60 % dispersion in mineral oil 7646-69-7 452912-500G 1,347.84CNY Detail
Aldrich (452912)  Sodiumhydride  60 % dispersion in mineral oil 7646-69-7 452912-100G 525.33CNY Detail
Aldrich (452912)  Sodiumhydride  60 % dispersion in mineral oil 7646-69-7 452912-5G 397.80CNY Detail
Aldrich (223441)  Sodiumhydride  dry, 95% 7646-69-7 223441-1KG 25,155.00CNY Detail
Aldrich (223441)  Sodiumhydride  dry, 95% 7646-69-7 223441-250G 8,903.70CNY Detail
Aldrich (223441)  Sodiumhydride  dry, 95% 7646-69-7 223441-50G 2,230.02CNY Detail

7646-69-7SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name Sodium hydride

1.2 Other means of identification

Product number -
Other names HNa

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:7646-69-7 SDS

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