P-Toluenesulfonylhydrazide (TSH) CAS 1576-35-8 for Organic Synthesis

• Customization: Available
• CAS No.: 1576-35-8
• Formula: C7h10n2o2s
• Model NO.: QMAX25257
• EINECS: 216-407-3
• Type: Synthesis Material Intermediates
• Appearance: Powder
• Quality: Refined
• Colour: White
• Synonym1: 4-Methylbenzenesulfonhydrazide
• Synonym 2: P-Toluenesulfonylhydrazide
• Abbreviation: Tsh
• Sample: Available
• Delivery: 3-5days
• Boiling Point: 340.5±35.0 °C
• Density: 1.42
• Storage: Store Below +30°C.
• Burning Residue: ≤0.5%
• Solubility: 139g/L
• Melting Point: 103-108°C
• Sample Package: 100g; 1kg; 25g
• Supply Type: OEM/ODM
• Certificate: ISO 9001
• Moisture: ≤0.5%
• Transport Package: 25kg/Bag; 25kg/Drum
• Specification: 99%
• Trademark: QINMU
• Origin: China
• HS Code: 2928000090
• Production Capacity: 300mt/Month

Product Description

Product Description

1.Basic Information for p-Toluenesulfonylhydrazide ( TSH ) CAS 1576-35-8:

1. Chemical Identification
IUPAC Name: 4-Methylbenzenesulfonohydrazide
Common Names:
p-Toluenesulfonylhydrazide
TSH (common abbreviation)
Tosylhydrazide
CAS Number: 1576-35-8
Molecular Weight: 186.23 g/mol

2. Physical & Chemical Properties
Appearance: White to off-white, crystalline powder.
Melting Point: ~110 - 113 °C (with decomposition)
Solubility: Slightly soluble in water; soluble in polar organic solvents (e.g., DMF, DMSO); sparingly soluble in alcohols; insoluble in non-polar solvents.

Reactivity: A versatile reagent. It acts as a source of hydrazine and a nucleophile. Key reactions include:

Wolff-Kishner-type Reduction: Forms hydrazones with aldehydes/ketones, which upon base treatment reduce the carbonyl to a methylene group.

Bamford-Stevens Reaction: Generates diazo compounds and subsequently carbenes or alkenes.

Decomposition: Upon heating above its melting point, it decomposes to release nitrogen gas, making it useful as a blowing agent.

Stability: Stable at room temperature but may decompose upon prolonged heating or exposure to strong acids/bases.

Item	Specifications
Appearance	White crystalline powder
Titr content ( %)	98.0Min
Decomposed temp.	143-147 Min
Heating loss ( %)	0.5Max
Ash( %)	0.1Max
Gas yield   (ml/g)	120-130
PH	5.0~7.5

 

Product Parameters

2. p-Toluenesulfonylhydrazide ( TSH ) CAS 1576-35-8 Primary Application Fields:
Primary Function 1: Organic Synthesis Reagent. A valuable reagent for the reductive deoxygenation of carbonyl groups (via in situ hydrazone formation) and for the synthesis of alkenes and carbenes.

Primary Function 2: Chemical Blowing Agent. Its controlled thermal decomposition releases nitrogen gas, making it an effective endothermic blowing agent for producing foamed plastics and rubbers (e.g., PVC, EVA).

Other Uses: Used in polymer modification and as an intermediate in synthesis.

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