What harm does phosphoric acid do to the human body

Phosphoric acid is a strong acid with a high degree of volatility. If it accidentally comes into contact with the air and people do not take protective measures, it is easy to inhale phosphoric acid and affect their respiratory tract. However, phosphoric acid plays a very important role in the chemical industry, so many chemical workers have to come into contact with phosphoric acid during their work, and they must take protective measures at this time. So if you are in frequent contact with phosphoric acid, what kind of harm will it do to the human body?

1. Harm of phosphoric acid to human health

Routes of entry: inhalation, ingestion, and percutaneous absorption.

Health Hazards: Vapor or mist is irritating to eyes, nose and throat. Liquid may cause burns to skin or eyes.

Chronic effects: atrophy of nasal mucosa, perforation of nasal septum. Prolonged and repeated skin contact may cause skin irritation.

2. Toxicology data and environmental behavior

Toxicity: Low toxicity.

Acute toxicity: LD501530mg/kg (rat oral); 2740mg/kg (rabbit dermal).

Irritation: 595 mg/24 hours percutaneous administration to rabbits caused severe irritation; 119 mg to rabbit eyes caused severe irritation.

Hazardous properties: Corrosive. Thermal decomposition produces highly toxic phosphorus oxide fumes.

Combustion (decomposition) products: phosphorus oxide.

3. Emergency treatment of leakage

Evacuate people in the leakage contaminated area to a safe area, and prohibit unrelated personnel from entering the contaminated area. It is recommended that emergency response personnel wear gas masks and chemical protective clothing. Do not come into direct contact with the leaked material. Mix it with sand, dry lime or soda ash, then collect and transfer it to a safe place or add a small amount to a large amount of water, adjust to neutral, and then put it into the wastewater system. In case of large-scale leakage, collect and recycle it or dispose of it after harmless treatment.

4. First aid measures

Skin contact: Take off contaminated clothes and rinse thoroughly with running water. If burns occur, treat as acid burns.

Eye contact: Immediately lift the eyelids and rinse with running water or saline for at least 15 minutes. Seek medical attention.

Inhalation: Move away from the scene to fresh air. Perform artificial respiration if necessary. Seek medical attention.

Ingestion: If swallowed by mistake, rinse mouth immediately and give milk or egg white to drink. Seek medical attention.