Safety knowledge education and emergency treatment

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Safety knowledge education and emergency treatment of sulfuric acid and hydrochloric acid

main component: 36% hydrogen chloride

appearance and properties: colorless and odorless transparent liquid. Due to different purity, the color is colorless, yellow brown, and sometimes turbid

main uses: production of industrial raw materials, industrial metal smelting, etc

III. health hazards

it is said that the route of invasion is inhalation and ingestion

health hazard: strong stimulation and corrosion to skin, mucosa and other tissues. Steam or fog can cause conjunctival edema and corneal turbidity, resulting in blindness, respiratory tract irritation, and severe dyspnea and pulmonary edema; High concentration causes laryngeal spasm or glottic edema and asphyxia. After oral administration, it causes digestive tract burns and ulcer formation; Severe cases may include gastric perforation, peritonitis, kidney damage, shock, etc. Skin burns, mild erythema, severe ulcers; Splashing into the eye can cause burns, even corneal perforation and total blindness

IV. first aid measures

skin contact: take off the contaminated clothes and wash the skin thoroughly with flowing water

eye contact: lift the eyelids, wash with a large amount of flowing water or normal saline for at least 15 minutes, and then seek medical advice in time

inhalation: quickly leave the site to a place with fresh air. Give oxygen when breathing is difficult. If breathing stops, carry out artificial respiration and seek medical advice immediately

ingestion: drink enough warm water, induce vomiting, and seek medical advice

v. combustion and explosion characteristics and fire protection

flammability: non flammable

dangerous characteristics: it can react with some active metal powders and release hydrogen. When encountering cyanide, it can produce highly toxic hydrogen cyanide gas. It reacts with alkali and releases a lot of heat. It is highly corrosive

fire extinguishing method: neutralize with alkaline substances such as sodium bicarbonate, sodium carbonate, hydrated lime, etc. A large amount of water can also be used to fight the fire

VI. leakage emergency treatment

quickly evacuate personnel from the leakage contaminated area to the safe area, isolate them, and strictly restrict access. It is recommended that emergency treatment personnel wear self-contained positive pressure respirators, which will further improve the comprehensive utilization level of straw and other solid wastes, and wear acid-base proof work clothes. Do not touch the leakage directly. Try to cut off the leakage source, such as the manual pendulum impact tester. Small leakage: mix sand, dry lime or soda ash. It can also be washed with a large amount of water, which is diluted and then put into the wastewater system. Massive leakage: build a dike or dig a pit for storage. Pump it to the tank car or special collector, recycle it or transport it to the waste treatment site for disposal

VII. Precautions for storage and transportation

store in a cool and ventilated warehouse. The storage temperature shall not exceed 30 ℃, and the relative humidity shall not exceed 85%. Keep the container sealed. It should be stored separately from alkalis, amines, alkali metals and inflammables, and it is forbidden to store them together. The storage area shall be equipped with leakage emergency treatment equipment and suitable storage materials

VIII. Protective measures

engineering control: closed operation, pay attention to ventilation. Mechanize and automate as much as possible. Provide safety shower and eye wash equipment

respiratory protection: wear gas masks when you may be exposed to smoke

eye protection: generally, special protection is not required. Chemical safety glasses can be worn in high concentration contact

body protection: wear acid-base resistant work clothes

hand protection: wear acid-base resistant protective gloves in case of high concentration contact

others: smoking, eating and drinking are prohibited at the work site. Shower and change clothes after work, and pay attention to personal hygiene

IX. physical and chemical properties

melting point (℃): -114.8 (Jinan experimental machine factory digital display iron ore pellet pressure tester (Figure) pure)

boiling point (℃): 108.6 (20%)

relative density (water =1): 1.20

relative density (air =1): 1.26

saturated vapor pressure (kPa): 30.66 (21 ℃)

solubility: miscible with water

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