Uses and emergency measures of benzoic acid_Kain Industrial Additives

Benzoic acid is a scaly or needle-like crystal with the smell of benzene or formaldehyde. The melting point is 122.13℃, the boiling point is 249℃, and the relative density is 1.2659 (15/4℃). It sublimates rapidly at 100°C, and its vapor is highly irritating and can easily cause coughing after inhalation. Slightly soluble in water, easily soluble in organic solvents such as ethanol and ether. Benzoic acid is a weak acid, stronger than fatty acids. They have similar chemical properties and can form salts, esters, acid halides, amides, acid anhydrides, etc., and are not easily oxidized. Electrophilic substitution reaction can occur on the benzene ring of benzoic acid, mainly obtaining meta-substitution products.

Basic information

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Chinese name

benzoic acid

Foreign name

Benzoic Acid

Melting point

122.13℃

boiling point

249℃

Chemical equation

C6H5COOH

Relative density

Protective clothing: Wear acid and alkali resistant overalls.

Hand protection: Wear chemical-resistant gloves.

Others: After work, shower and change clothes. Pay attention to personal hygiene. Get regular physical exams.

First aid measures

Skin contact: Take off contaminated clothing and rinse thoroughly with plenty of running water.

Eye contact: Open the upper and lower eyelids immediately and rinse with running water or saline. Seek medical attention.

Inhalation: Leave the scene quickly to fresh air. Keep your airway open. Give nitrogen infusion when breathing is difficult. Once breathing stops, begin CPR immediately. Seek medical attention.

Ingestion: If swallowed by mistake, rinse mouth, drink milk or egg white, and seek medical attention.

Fire-fighting methods: mist water, foam, carbon dioxide, dry powder, sand.

Notes

External use of this product may cause mild local irritation. Ointments should not be stored in places where the temperature is too high.

Environmental hazards: It is harmful to the environment and can cause pollution to water bodies and the atmosphere.

Explosion hazard: This product is flammable and irritating.

Hazardous characteristics: Combustible when exposed to open flames and high heat.

Toxicological information

It is highly toxic to microorganisms, but its sodium salt has very low toxicity. Oral LD50 for rats: 1700 mg/kg. It is not harmful to the body if taken orally below 0.5g per day, and there is no harm to health even if the dosage does not exceed 4g. In human and animal tissues, it can be combined with glycine of protein components to detoxify and form hippuric acid

Absorption

After oral ingestion of benzoic acid and sodium benzoate, 100% absorption from the gastrointestinal tract of experimental animals or humans can be assumed. In humans, peak plasma concentrations are reached in 1 – 2 hours.

Toxicity manifestations

Skin Hazards: Redness, burning sensation, itching.

Aspiration hazards: cough, sore throat.

Eye hazards: redness, pain.

Hazard if swallowed: abdominal pain, nausea, vomiting.

Health Hazards

Routes of invasion: inhalation, ingestion.

Health hazards: Mildly irritating to skin. Vapors are irritating to upper respiratory tract, eyes and skin. There is no obvious hazard in contact with this product under normal circumstances.

Acute toxicity

502530mg/kg (orally for rats); 2370mg/kg (orally for mice); 500mg/kg (orally for humans); the minimum toxic dose for humans is 6mg/kg, which may cause skin damage.

Hazardous characteristics: There is a danger of burning when exposed to high heat, open flame or contact with oxidants.