Product Identification

Product Name

Hydrochlorothiazide

Synonyms

2H-1,2,4-Benzothiadiazine-7-sulfonamide, 6-chloro-3,4-dihydro-, 1,1-dioxide
Aldectazide 50/50
Aldoril d30
Diurizid
Hypothiazide
Servithiazid

CAS

58-93-5

Formula

C7H8ClN3O4S2

Molecular Weight

297.74

EINECS

200-403-3

RTECS

DK9100000

RTECS Class

Tumorigen; Drug; Mutagen; Reproductive Effector; Human Data

Merck

13,4802

Beilstein/Gmelin

625101

Physical and Chemical Properties

Appearance

Crystals or white powder.

Solubility in water

Slightly soluble

Melting Point

273-275

pKa/pKb

7.9 (pKa)

Partition Coefficient

-.03

Usage

Medication.

First Aid Measures

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 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

Noncardiogenic pulmonary edema after hydrochlorothiazide ingestion has been reported and is believed to be an idiosyncratic reaction.

EC Safety Phrase

S 22 24/25

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

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

in overdose lethargy and coma have been reported in children ingesting thiazide diuretics. Altered mental status, headache, hypertonia, muscle weakness, and seizures may develop secondary to diuretic-induced electrolyte abnormalities. Ototoxicity occurs rarely and is usually reversible.

Fire Fighting Measures

Fire Fighting

Fires involving this compound should be controlled using a dry chemical, carbon dioxide or Halon extinguisher.

Accidental Release Measures

Small spills/leaks

Should a spill occur while you are handling this chemical, you should dampen the solid spill material with acetone, then transfer the dampened material to a suitable container. Use absorbent paper dampened with acetone 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 acetone followed by washing with a strong soap and water solution. Do not reenter the contaminate area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned.

Stability and Reactivity

Stability

No data.