- 2,2'-Diphenylcarbonic dihydrazide
White to pink, odorless powder.
Used as a indicator in titrating Fe.
Registry Numbers and Inventories.
S 22 24/25
Japan ENCS (MITI)
Melting point, °C
170 - 172
Boiling point, °C
Solubility in water
Partition coefficient, pKow
Hazards and Protection.
Keep away from heat and flame. Store in a cool, dry place. Keep from contact with oxidizing materials.
Use with adequate ventilation. Avoid contact with skin and eyes. Avoid ingestion and inhalation.
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
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.
Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions.
Stable under normal shipping and handling conditions. Decomposes when heated.
Strong oxidizing agents.
Nitrogen oxides, carbon monoxide, carbon dioxide.
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. This material in sufficient quantity and reduced particle size is capable of creating a dust explosion. Extinguishing media: For small fires, use water spray, dry chemical, carbon dioxide or chemical foam. In case of fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Use water spray to cool fire-exposed containers.
May cause irritation of the eyes, skin and respiratory tract.
Causes gastrointestinal irritation with nausea, vomiting and diarrhea.
May cause respiratory tract irritation.
May cause skin irritation.
Dust may cause mechanical irritation.
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
Remove from exposure to fresh air immediately. Get medical aid if cough or other symptoms appear.
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. If irritation develops, get medical aid.
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