Safety precautions for glacial acetic acid

I. Physical and chemical properties and uses

Colorless transparent liquid with acidic odor, density :1.05; Freezing point :16.6℃; Boiling point :118.1℃. Used in the manufacture of vinyl chloride plastics, acetic

anhydride, organic acetic acid

Ester, acetate (lead, aluminum, copper, etc.) and acetate fiber: can also be used in dyes, pharmaceuticals, canned food, food preservative, pigment production and

other industries.

Ii. Toxicity

It is low toxic and can be absorbed through digestive tract, respiratory tract and skin, and has irritating effect on eyes, skin and upper respiratory tract.

Iii. Effects of short-term excessive exposure

Inhalation: Inhalation of higher concentrations of acetic acid aerosols can cause coughing, dyspnea, pharyngeal irritation, dry throat, increased nasal discharge,

nasal bleeding, headache and other stinging

Aggressive symptoms.

Eye contact: eyelid edema, conjunctival congestion.

Skin contact: mild erythema, severe chemical burns, blisters and pain.

4. Effects of long-term exposure

Long-term inhalation of acetic acid vapors or aerosols can produce chronic effects on the human body, including cough, phlegm, chest urgency and catarrhal

sinusitis. distinct

Exposure causes asthma attacks, local skin blackening and keratosis, corrosion spots on the nasal mucosa and teeth, and anemia.

Fire and explosion

Acetic acid vapor can form an explosive mixture with air, directly causing a fire or releasing hydrogen, which poses a fire hazard. In case of fire, mist water, dry

powder, resistance

Alcohol foam, carbon dioxide to extinguish the fire, and water to hold the fire in the container cooling.

6. Chemical reactivity

When there is air, hydrogen can be produced in direct contact with a variety of metals, 16.6℃ is pure acetic acid crystallization [glacial acetic acid], its vapor can

be burned in the air, the first blue

A fire. Produces carbon dioxide and water vapor.

7. Personal protection

Inhalation: When the concentration of vapor in the air is unknown, a gas mask with a yellow color filter box (tank) should be worn.

Skin: Wear protective clothing and gloves. Safe showers and eye rinses should be available in the workplace.

8. First Aid

Inhalation: Move the patient into fresh air. If breathing stops, artificial respiration should be performed immediately.

Eye contact: Keep the eyelids open and rinse the affected eye with a saline solution or a gentle, slow stream of water for at least 20 minutes.

Skin contact: Quickly take off contaminated clothes and rinse the contaminated skin with plenty of water.

Administration: Dilute sodium bicarbonate solution should be used as emetics.

Storage and transportation

It should be stored in a cool, dry and well-ventilated warehouse with a non-combustible material structure. The floor shall be coated with acid-resistant paint. Keep Kuwen above freezing point and away from fire

Isolated storage and transportation of source and oxide. Packing method :(II) class.

Safety and handling

Have good ventilation conditions and effective protective equipment, if there is acetic acid leakage or splash, should be neutralized with lye, and then flush with

water, diluted sewage into

The wastewater system.