3-Pyridinecarboxylic acid 1-oxide

  • Oxiniacicacid
Formula
C6H5NO3
Structure
Description
Beige powder

Registry Numbers and Inventories.
CAS
2398-81-4
EC (EINECS/ELINCS)
219-265-0
S 22 24/25
Merck
12,7075
Beilstein/Gmelin
115860
Beilstein Reference
5-22-02-00140
Swiss Giftliste 1
G-8525
Canada DSL/NDSL
NDSL
US TSCA
Listed

Properties.
Formula
C6H5NO3
Formula mass
139.11
Melting point, °C
249
Boiling point, °C
469
Decomposition point, °C
254-255
Vapor pressure, mmHg
1E-9 (25 C)
Solubility in water
Very solubble
pKa/pKb
3.19 (pKa)
Partition coefficient, pKow
-1.53
Heat of vaporization
77.0 kJ/mol
Heat of combustion
-2698 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry place. Keep container closed when not in use.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
Respirators
A respiratory protection program that meets OSHA's 29 CFR ß1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Clean up spills immediately, while using/wearing the proper protective equipment.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, oxides of nitrogen, carbon dioxide.

Fire.
Flash Point,°C
237
Fire fighting
Wear approved SCBA in full pressure-demand and full protective gear. Use agent most appropriate to extinguish fire.

Health.
Poison_Class
-
Exposure effects
   Ingestion
The toxicological properties of this substance have not been fully investigated.
   Inhalation
Harmful if inhaled. May cause respiratory tract irritation.
   Skin
May cause skin irritation. Harmful if absorbed through the skin.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. 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 lids. Get medical aid immediately.

Transport.
HS Code
2933 39 99