Benzenesulfonyl hydrazide

Synonym(s):Benzenesulfonylhydrazine;BSH;Porofor BSH

CAS NO.：80-17-1
Empirical Formula: C6H8N2O2S
Molecular Weight: 172.2
MDL number: MFCD00007583
EINECS: 201-255-2
SAFETY DATA SHEET (SDS)
Update Date: 2023-12-25 13:23:17

What is Benzenesulfonyl hydrazide?

Chemical properties

Benzenesulfonyl hydrazide is WHITE POWDER

Chemical properties

Benzenesulfonohydrazides,unlike the benzenesulfonamides, are thermally unstable. They decompose, when heated in water in some cases, to form sulfides, thiosulfonates, and nitrogen; for this reason they are used as blowing agents in the production of foams.

The Uses of Benzenesulfonyl hydrazide

Benzenesulfonyl hydrazide is used in making foam rubber and foam plastics.

Production Methods

Benzenesulfonyl hydrazides are produced by treating benzenesulfonyl chlorides with hydrazine in dioxane, alcohol, or water and in the presence of a second equivalent of hydrazineoranotherbase. They react with nitrous acid to form benzenesulfonyl azides according to the following equation:
ArSO₂NHNH₂ +HNO₂→RSO₂N₃ +2H₂O

General Description

Benzenesulfonyl hydrazide is a white to light-colored crystalline solid. Insoluble in water and denser than water. Contact may irritate skin, eyes and mucous membranes. May be toxic by ingestion. Readily ignited by sparks or flames and burns vigorously. Used to make other chemicals.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

Self-decomposition or self-ignition may be triggered by heat, chemical reaction, friction or impact. May be ignited by heat, sparks or flames.

Safety Profile

Poison by ingestion. A flammable solid. When heated to decomposition it emits toxic vapors of NOx and SOx.

Properties of Benzenesulfonyl hydrazide

Melting point:	101-103 °C(lit.)
Boiling point:	333.5±25.0 °C(Predicted)
Density	1.303 (estimate)
refractive index	1.6490 (estimate)
Flash point:	110 °C
storage temp.	Flammables area
solubility	soluble in Methanol
form	solid
pka	9.30±0.50(Predicted)
color	White to Almost white
Merck	14,7598
BRN	640079
CAS DataBase Reference	80-17-1(CAS DataBase Reference)
NIST Chemistry Reference	Benzenesulfonic acid, hydrazide(80-17-1)
EPA Substance Registry System	Benzenesulfonic acid, hydrazide (80-17-1)

Safety information for Benzenesulfonyl hydrazide

Signal word	Danger
Pictogram(s)	Flame Flammables GHS02 Exclamation Mark Irritant GHS07
GHS Hazard Statements	H242:Self-reactive substances and mixtures; and Organic peroxides H302:Acute toxicity,oral
Precautionary Statement Codes	P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P220:Keep/Store away from clothing/…/combustible materials. P234:Keep only in original container. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P280:Wear protective gloves/protective clothing/eye protection/face protection. P420:Store away from other materials. P403+P235:Store in a well-ventilated place. Keep cool. P501:Dispose of contents/container to..…