2-Hydroxypyridine 142-08-5 Top quality CAS NO.142-08-5

Product Name: 2-Hydroxypyridine
Synonyms: 1-Hydroxy-2-pyridine;2(1h)-pyridinone;alpha-Pyridone;Pyridone-2;AURORA KA-3075;A-PYRIDONE;a-Hydroxypyridine;1,2-dihydro-2-oxopyridine
CAS: 142-08-5
MF: C5H5NO
MW: 95.1
EINECS: 205-520-3
Product Categories: Pyridines;Pyridine;Pyridines derivates;(intermediate of benzoxazole);Nucleotides and Nucleosides;Bases & Related Reagents;Nucleotides;Building Blocks;C5;Chemical Synthesis;Heterocyclic Building Blocks
Mol File: 142-08-5.mol

mp  105-107 °C(lit.)
bp  280-281 °C(lit.)
density  1.39
Fp  210 °C
storage temp.  Store at RT.
BRN  105786
CAS DataBase Reference 142-08-5(CAS DataBase Reference)
NIST Chemistry Reference 2(1H)-Pyridinone(142-08-5)
EPA Substance Registry System 2(1H)-Pyridinone(142-08-5)
Safety Information
Hazard Codes  Xi,Xn,T
Risk Statements  36/37/38-40-25
Safety Statements  26-36-37/39-22-45
RIDADR  UN2811
WGK Germany  3
RTECS  UV1144050
F  8
HazardClass  6.1
PackingGroup  III

【Product Name】

2-Hydroxypyridine
【Synonyms】

1,2-Dihydro-2-oxopyridine
1H-2-Pyridone
1H-Pyridin-2-one
2-Hydroxypyridine
a-Pyridone
【CAS】

142-08-5
【Formula】

C5H5NO
【Molecular Weight】

95.1
【EINECS】

205-520-3
【RTECS】

UV1144050
【RTECS Class】

Drug
【Beilstein/Gmelin】

105786
【Beilstein Reference】

5-21-07-00106
Physical and Chemical Properties Back to Contents
【Appearance】

Off white to brown crystals.
【Solubility in water】

Very soluble
【Melting Point】

107
【Boiling Point】

324
【Vapor Pressure】

0.0003 (25 C)
【Density】

1.085 g/cm3 (30 C)
【pKa/pKb】

13.30 (pKb)
【Partition Coefficient】

-.58
【Heat Of Vaporization】

56.6 kJ/mol
【Heat Of Combustion】

-2516 kJ/mol
First Aid Measures Back to Contents
【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】

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
【Skin】

Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
【Eyes】

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
Handling and Storage Back to Contents
【Storage】

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
【Handling】

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Hazards Identification Back to Contents
【Ingestion】

May cause gastrointestinal irritation with nausea, vomiting and diarrhea. The toxicological properties of this substance have not been fully investigated.
【Inhalation】

May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
【Skin】

May cause skin irritation. The toxicological properties of this material have not been fully investigated.
【Eyes】

May cause eye irritation. The toxicological properties of this material have not been fully investigated.
【EC Risk Phrase】

R 36/37/38
【EC Safety Phrase】

S 26 36
Exposure Controls/Personal Protection Back to Contents
【Personal 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.
Fire Fighting Measures Back to Contents
【Flash Point】

181
【Autoignition】

675
【Fire Fighting】

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Accidental Release Measures Back to Contents
【Small spills/leaks】

Clean up spills immediately, using the appropriate protective equipment. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Provide ventilation.
Stability and Reactivity Back to Contents
【Incompatibilities】

Oxidizing agents.
【Stability】

Stable under normal temperatures and pressures.
【Decomposition】

Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.