Semicarbazide, 4-phenyl-3-thio

  • Hydrazinecarbothioamide, N-phenyl-
  • 4-Phenylthiosemicarbazide
  • 4-Phenyl-3-thiosemicarbazide
  • USAF-EK-5426
  • USAF-EL-45
Formula
C7H9N3S
Structure
Description
White to light yellow crystalline powder.

Registry Numbers and Inventories.
CAS
5351-69-9
EC (EINECS/ELINCS)
226-329-1
S 22 36/37 45
RTECS
VT4025000
RTECS class
Agricultural Chemical and Pesticide
UN (DOT)
2811
Beilstein/Gmelin
608285
Beilstein Reference
4-12-00-00827
Canada DSL/NDSL
NDSL
US TSCA
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C7H9N3S
Formula mass
167.23
Melting point, °C
138 - 141
Boiling point, °C
308
Partition coefficient, pKow
1.45

Hazards and Protection.
Storage
Store in a cool, dry place. Store in a tightly closed container.
Handling
Do not breathe dust, vapor, mist, or gas. Do not get in eyes, on skin, or on clothing. Use only in a chemical fume hood.
Protection
Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container.
Disposal code
9
Stability
No data.
Incompatibilities
Strong oxidizing agents, strong acids, strong bases;
Decomposition
Carbon monoxide, oxides of nitrogen, oxides of sulfur, carbon dioxide.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
   Ingestion
Poison by ingestion.
   Inhalation
May cause respiratory tract irritation.
   Skin
May cause skin irritation. May be absorbed through the skin in harmful amounts.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
Get medical aid immediately. Wash mouth out with water.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
2811
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
HS Code
2930 90 70