ChemicalBook >>1(2H)-Phthalazinone>>Benzo[d]pyridazin-1(2H)one(119-39-1)

Benzo[d]pyridazin-1(2H)one(119-39-1)

Benzo[d]pyridazin-1(2H)one(119-39-1)
Product IdentificationBack to Contents
【Product Name】

Benzo[d]pyridazin-1(2H)one
【Synonyms】

2H-Phthalazin-1-one
Phthalazinone
Phthalazone
【CAS】

119-39-1
【Formula】

C8H6N2O
【Molecular Weight】

146.15
【EINECS】

204-319-8
【RTECS】

TH9185000
【RTECS Class】

Mutagen
【Beilstein/Gmelin】

3654
【Beilstein Reference】

5-24-03-00075
【EC Class】

harmful
Physical and Chemical PropertiesBack to Contents
【Appearance】

Pale yellow crystals.
【Solubility in water】

Soluble
【Melting Point】

183 - 185
【Boiling Point】

337
【Vapor Pressure】

12.29
【Partition Coefficient】

.67
【Usage】

Chemical intermediate for hydralazine, an antihypertensive agent.
First Aid MeasuresBack to Contents
【Ingestion】

DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Be prepared to transport the victim to a hospital if advised by a physician.
【Inhalation】

IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used.
【Skin】

IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.
【Eyes】

First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.
Handling and StorageBack to Contents
【Storage】

Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
【Handling】

All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Exposure Controls/Personal ProtectionBack to Contents
【Personal Protection】

Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.
【Respirators】

Wear a NIOSH-approved half face respirator equipped with an organic vapor/acid gas cartridge (specific for organic vapors, HCl, acid gas and SO2) with a dust/mist filter.
【Exposure Effects】

The toxicological properties of this material have not been investigated.
Fire Fighting MeasuresBack to Contents
【Flash Point】

121
【Fire Fighting】

Fires involving this material can be controlled with a dry chemical, carbon dioxide or Halon extinguisher.
【Fire Potential】

This material is probably combustible.
Accidental Release MeasuresBack to Contents
【Small spills/leaks】

Should a spill occur while you are handling this chemical, FIRST REMOVE ALL SOURCES OF IGNITION, then you should dampen the solid spill material with ethanol and transfer the dampened material to a suitable container. Use absorbent paper dampened with ethanol to pick up any remaining material. Seal the absorbent paper, and any of your clothes, which may be contaminated, in a vapor-tight plastic bag for eventual disposal. Solvent wash all contaminated surfaces with ethanol followed by washing with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned.
Stability and ReactivityBack to Contents
【Disposal Code】

3
【Stability】

No data.
Transport InformationBack to Contents
【HS Code】

2933 99 90
Hazards IdentificationBack to Contents
【EC Risk Phrase】

R 22
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