BENZENESULFONYL HYDRAZIDE

PRODUCT IDENTIFICATION

CAS NO. 80-17-1

BENZENESULFONYL HYDRAZIDE

EINECS NO. 201-255-2
FORMULA C6H8N2O2S
MOL WT. 172.20

H.S. CODE

 

TOXICITY

 
SYNONYMS benzenesulfonohydrazide; BSH;
Benzolsulfonohydrazid (German); Bencenosulfonohidrazida (Spanish); Benzenesulfonohydrazide (French); Phenylsulfohydrazide; Phenylsulfonyl hydrazide; Phenylsulfonylhydrazine;
PRICE  

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE white to pale yellow powder

MELTING POINT

90 - 103 C
BOILING POINT Decomposes
SPECIFIC GRAVITY 1.45 - 1.5

SOLUBILITY IN WATER

 
pH 6.5 - 7.2
VAPOR DENSITY  
AUTOIGNITION

 

REFRACTIVE INDEX

 

NFPA RATINGS Health: 2; Flammability: 2; Reactivity: 0
FLASH POINT

103 C

STABILITY Stable but decomposes if heated.

GENERAL DESCRIPTION & APPLICATIONS

Hydrazine (anhydrous) is a clear, fuming, corrosive liquid with an ammonia-like odor; melting at 1.4 C, boiling at 113.5 C, specific gravity 1.011. It is very soluble in water and soluble in alcohol. It decomposes on heating or exposure to UV to form ammonia, hydrogen, and nitrogen, which may be explosive with a blue flame when catalysed by metal oxides and some metals such as platinum or Raney nickel. It is prepared from ammonia with chloramine in the presence of glue or gelatin (to inhibit decomposition of the hydrazine by unreacted oxidants) as the hydrate form usually (100% monohydrate contains 64% by weight hydrazine). Hydrazine is also prepared from sodium hypochlorite with urea in the presence of glue or gelatin.  Botht ammonia and amines are nitrogen nucleophiles which donate electrons (they are Lewis bases). But hydrazine (diamine) has much stronger nucleophilicity which makes it more reactive than ammonia. Hydrazine has dibasic and very reactive properties. Hydrazine is used as a component in jet fuels because it produce a large amount of heat when burned. Hydrazine is used as rocket fuel. Hydrazine is used as an oxygen scavenger for water boiler feed and heating systems to prevent corrosion damage. Hydrazine is used as a reducing agent for the recovery of precious metals. It is used as a polymerization catalyst and a chain extender in urethane coatings. It and its derivatives are versatile intermediates. They have active applications in organic synthesis for agrochemicals, pharmaceuticals, photographic, heat stabilizers, polymerization catalysts, flame-retardants, blowing agents for plastics, explosives, and dyes. Recently, hydrazine is applied to LCD (liquid crystal displays) as the fuel to make faster thin-film transistors. Hydrazide is an acyl hydrazine. Acyl (-CO) is an organic radical formed by removal of a hydroxyl group from an organic acid (carboxyl group). Benzenesulfonyl Hydrazide is a foaming agent for rubbers and plastics such as PVC, EVA, polyolefin, polystyrene products. It features non-staining, non-discoloring, non-toxic, and odorless nitrogen releasing.
SALES SPECIFICATION

APPEARANCE

white to pale yellow powder

ASSAY

98.0% min

ASH

0.3% max

DECOMPOSITION TEMP

90 - 105 C

GAS YIELD

115 - 120 (ml/g)

WATER

0.5% max

PARTICLE SIZE

95% min (200 mesh)

TRANSPORTATION
PACKING 25kgs in Bag, 40kgs in iron drum
HAZARD CLASS  
UN NO.  
DESCRIPTION OF BLOWING AGENT

Blowing agents, also called Foaming agents, can be classified as Physical and Chemical Blowing Agents. Physical blowing agents are not under chemical changes during processing. Physical blowing agents are in forms of liquid or compressed gas which will transfer state into gases or low boiling liquid during processing causing resins into cellular structure. Chemical Blowing Agents are mainly solid form of hydrazine derivatives include Azodicarbonamide; p,p'-Oxybis(benzenesulfonyl hydrazide); 5-Phenyltetrazole; p-Toluene sulfonyl semicarbazide; Trihydrazine Triazine; They commonly release gases such as nitrogen, carbon dioxide, carbon monoxide or ammonia. But ammonia is not desirable as it effects on degrade of resins. There are nonazo blowing agents releasing carbon dioxide such as sodium borohydride.

Blowing Agent Class

  • Azo Compounds
    • Azodicarbonamide (CAS RN: 123-77-3)
  • Hydrazine Compounds
    • p-Toluenesulfonylhydrazide (CAS RN: 1576-35-8)
    • p,p'-Oxybis (Benzenesulfonylhydrazide) (CAS RN: 80-51-3)
    • Benzenesulfonyl Hydrazide (CAS RN: 80-17-1)
    • p-Toluenesulfonyl acetone hydrazone
  • Carbazides
    • p-Toluenesulfonylsemicarbazide (CAS RN: 10396-10-18)
    • p,p'-Oxybis (Benzenesulfonylsemicarbazide)
  • Tetrazoles
    • 5-Phenyltetrazole (CAS RN: 18039-42-4)
  • Nitroso Compounds
    • N,NĄŻ-Dinitroso-pentamethylenetetramine (CAS RN: 101-25-7)
  • Carbonates
    • Sodium Bicarbonate (CAS RN: 144-55-8)