What hazard class is acetic acid solution (cas 64 19 7)?

CAS 64-19-7 Acetic Acid has the chemical formula CH3COOH. It is an organic monobasic acid and the main component of vinegar. Pure anhydrous glacial acetic acid is a colorless, hygroscopic solid with a freezing point of 16.6°C (62°F).

What hazard class is acetic acid solution (cas 64 19 7)?

Corrosive to skin and eyes (GHS Class 1B): It causes severe skin burns, eye damage, and tissue necrosis upon direct contact, with the hazard statement H314 ("Causes severe skin burns and eye damage").

Flammable liquid (GHS Class 3): Its vapor is flammable with a flash point of 39–40°C and an explosion range of 4.0%–19.9% (v/v), carrying the hazard statement H226 ("Flammable liquid and vapor").

Acute toxicity (oral, GHS Class 4, for concentrated forms): While dilute acetic acid (e.g., vinegar) is non-toxic, concentrated glacial acetic acid has low acute oral toxicity (rat LD50 = 3310 mg/kg) with the hazard statement H302 ("Harmful if swallowed").

Specific target organ toxicity (single exposure, GHS Class 3, for respiratory tract): Inhalation of high concentrations can irritate the respiratory tract, with the hazard statement H335 ("May cause respiratory irritation").

Safety Information:

• Keep container tightly closed and store in a well-ventilated area.
• Keep away from fire and do not smoke.
• If contact with eyes, immediately flush with plenty of water and seek medical advice.
• Wear appropriate protective clothing, gloves, and eye/face protection.

Acetic Acid solution Handling Precautions:

Operate in a closed system with enhanced ventilation. Operators must be specially trained and strictly adhere to operating procedures. Wear a self-priming filter respirator (half-face mask), chemical safety goggles, anti-static work clothes, and oil-resistant rubber gloves. Keep away from sources of ignition and heat; smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment to prevent vapor leakage into the workplace air.

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