4-(2-Pyridylazo)resorcinol monosodium salt monohydrate

  • 1,3-Benzenediol, 4-(2-pyridinylazo)-, monosodium salt, monohydrate
Formula
C11H8N3NaO2.H2O
Structure
Description
Brown powder.

Registry Numbers and Inventories.
CAS
16593-81-0
EC (EINECS/ELINCS)
236-339-8
R 36/37/38
Beilstein/Gmelin
3825637
Beilstein Reference
5-22-14-00619
Austrailia AICS
Listed
New Zealand
Listed

Properties.
Formula
C11H8N3NaO2 . H2O
Formula mass
255.21
Solubility in water
38 g/L (20 C)

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Protection
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 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
Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions.
Disposal code
3
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents, acids, bases, acid chlorides, acid anhydrides
Decomposition
Carbon monoxide, oxides of nitrogen, carbon dioxide, sodium oxide.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: Use agent most appropriate to extinguish fire.

Health.
Exposure effects
   Ingestion
May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated.
   Inhalation
The toxicological properties of this substance have not been fully investigated. Inhalation of dust may cause respiratory tract irritation.
   Skin
Systemic effects from skin absorption of resorcinol include: restlessness, methemoglobinemia, convulsions, tachycardia, dyspnea, and death. Resorcinol has also been reported to cause sensitization and goiter. Resorcinol has been known to cause hyperemia, itch, dermatitis, edema, and corrosion.
   Eyes
May cause eye irritation. Contact of the eye with resorcinol has caused necrosis and corneal perforation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   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. 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 immediately.

Transport.
HS Code
2933 39 99