Product Identification

Product Name

Hydralazine

Synonyms

1(2H)-Phthalazinone, hydrazone
1-Hydrazinophthalazine
1-Phthalazinylhydrazine
Apressin
Hypophthalin
Phthalazin-1-ylhydrazine

CAS

86-54-4

Formula

C8H8N4

Molecular Weight

160.18

EINECS

201-680-3

RTECS

TH8925000

RTECS Class

Tumorigen; Drug; Mutagen; Reproductive Effector; Human Data

Merck

12,4800

Beilstein/Gmelin

132615

Beilstein Reference

5-25-17-00412

Physical and Chemical Properties

Appearance

Yellow needles from methanol.

Solubility in water

Slightly soluble

Melting Point

272 - 275

pKa/pKb

7.83 (pKb)

Partition Coefficient

1

Usage

Medication.

First Aid Measures

Ingestion

Seek medical attention. If individual is drowsy or unconscious, do not give anything by mouth; place individual on the left side with the head down. Contact a physician, medical facility, or poison control center for advice about whether to induce vomiting. If possible, do not leave individual unattended.

Inhalation

If symptoms develop, move individual away from exposure and into fresh air. If symptoms persist, seek medical attention. If breathing is difficult, administer oxygen. Keep person warm and quiet; seek immediate medical attention.

Skin

Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.

Eyes

If symptoms develop, immediately move individual away from exposure and into fresh air. Flush eyes gently with water for at least 15 minutes while holding eyelids apart; seek immediate medical attention.

Handling and Storage

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.

Hazards Identification

Inhalation

Pulmonary edema has been reported following buflomedil overdoses. Respiratory depression may occur with buflomedil intoxication.

Ingestion

Nausea and vomiting are common following therapeutic administration of fenoldopam.

Exposure Controls/Personal Protection

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

Use NIOSH/MSHA approved respirator appropriate for exposure of concern.

Exposure Effects

headache, dizziness and sweating may occur with any of the vasodilators. Peripheral neuropathy has been reported following long term hydralazine therapy. Hyperglycemic, non-ketotic coma may occur with diazoxide. Seizures and coma may occur with buflomedil toxicity.

Fire Fighting Measures

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. Use agent most appropriate to extinguish fire.

Accidental Release Measures

Small spills/leaks

Evacuate area and ventilate. Wear protective equipment. If required, use an inert absrobent. Sweep up and place in an appropriate container for disposal. Wash contaminated surfaces.

Stability and Reactivity

Stability

No data.

Incompatibilities

Strong oxidizing agents.