Diphenyloxide-4,4'-disulfohydrazide

  • 4,4'-Oxybis(benzenesulfonic acid hydrazide)
  • 4,4'-Bis(hydrazinosulfonyl)diphenyl ether
  • 4,4'-Oxydi(benzenesulfonic acid hydrazide)
  • 4,4'-Oxydibenzenesulfonic acid dihydrazide
  • Neocellborn 1000SW
  • Unifoam AZ 90
Formula
C12H14N4O5S2
Structure
Description
A colorless, crystalline solid with a geranium-like odor.
Uses
Blowing agent for sponge rubber & expanded plastics.

Registry Numbers and Inventories.
CAS
80-51-3
EC (EINECS/ELINCS)
201-286-1
RTECS
DB7321000
RTECS class
Mutagen
UN (DOT)
2951
Beilstein/Gmelin
2954604
Beilstein Reference
4-11-00-00597
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C12H14N4O5S2
Formula mass
358.42
Boiling point, °C
125
Decomposition point, °C
160-161
Density
1.52 g/cm3 (20 C)
Solubility in water
Insoluble
Partition coefficient, pKow
1.64

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers.
Stability
No data.
Incompatibilities
Toxic gases are formed by mixing materials of this class with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents Flammable gases are formed by mixing materials in this group with alkali metals Explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides.

Fire.
Fire fighting
Use water in flooding quantities as fog. Use alcohol foam, dry chemical or carbon dioxide. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Keep run-off water out of sewers and water sources.
Fire potential
Self-decomposition or self-ignition may be triggered by heat, chemical reaction, friction or impact.
Hazards
Self-decomposition or self-ignition may be triggered by heat, chemical reaction, friction or impact. May be ignited by heat, sparks or flames. Some may decompose explosively when heated or involved in a fire. May burn violently. Decomposition may be self-accelerating and produce large amounts of gases. Vapors or dust may form explosive mixtures with air.
Combustion products
May produce irritating, toxic and/or corrosive gases.

Health.
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Inhalation
Inhalation or contact with vapors, substance, or decomposition products may cause severe injury or death.
   Skin
See Inhalation.
   Eyes
See Inhalation.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. Remove material from skin immediately. Immediately flush with running water for at least 20 minutes.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
2951
Response guide
Hazard class
4.1
Std. Transport #
4917458