Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
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3,6-Pyridazinediol(123-33-1)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

Product Name
3,6-Pyridazinediol
Synonyms
1,2-Dihydropyridazine-3,6-dione
3,6-Pyridazinediol
Antergon
Maleic acid hydrazide
Maleic hydrazide
Vondalhyde
CAS
123-33-1
Formula
C4H4N2O2
Molecular Weight
112.09
EINECS
204-619-9
RTECS
UR5950000
RTECS Class
Agricultural Chemical and Pesticide; Tumorigen; Mutagen
Merck
13,5728
Beilstein/Gmelin
112223
Beilstein Reference
5-24-06-00012

Physical and Chemical Properties

Appearance
Odorless white solid.
Solubility in water
Very soluble
Melting Point
292
Density
1.60 g/cm3 (20 C)
pKa/pKb
9.21 (pKa)
Partition Coefficient
-.84
Heat Of Vaporization
Heat Of Combustion
-2114 kJ/mol
Usage
Experimental use: in horticulture & agriculture, in synthesis of pyridazine.
Odor threshold
Odorless

First Aid Measures

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 if irritation or symptoms occur.
Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.
Skin
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.
Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. If irritation develops, get medical aid.

Handling and Storage

Storage
Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.

Hazards Identification

Inhalation
Dust is irritating to the respiratory tract.
Skin
May cause skin irritation.
Eyes
Dust may cause mechanical irritation.
Ingestion
May cause irritation of the digestive tract. May cause central nervous system effects.
EC Risk Phrase
R 36/37/38 40
EC Safety Phrase
S 26 36/37/39
UN (DOT)
2811

Exposure Controls/Personal Protection

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.
Exposure Effects
Chronic ingestion may cause liver damage.
Poison Class
4

Fire Fighting Measures

Flash Point
300
Autoignition
430
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 appropriate foam.
Fire Potential
Combustible solid.

Accidental Release Measures

Small spills/leaks
Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal.

Stability and Reactivity

Disposal Code
3
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents, strong acids, pesticides which are highly alkaline in reaction.
Decomposition
Nitrogen oxides, carbon monoxide, carbon dioxide.
Combustion Products
Toxic nitrogen oxides are produced.

Transport Information

UN Number
2811
HS Code
2933 99 90
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