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Sulfuric acid
Product category Chemical raw materials 
Product picture

Product Chinese name

sulfuric acid 

Product English name

sulfuric acid 

Technical description coding

954

CAS No.

7664-93-9 

Molecular formula

H2SO4

Molecular weight

98.08

Content 98.0%
Haxards summarizing

Health hazard:

It has strong stimulation and corrosion effect on skin and mucous. Steam or fog can cause conjunctivitis, conjunctival edema, corneal opacity, and even blind. It can cause breath stimulation, the person with heavy symptoms can have breath difficulties and pulmonary edema.High concentrations can cause laryngospasm or laryngeal edema and suffocation death. Oral can cause digestive tract and produce ulceratives. Serious may have peritonitis, kidney damage, shock, etc. Burn skin may appear erythema, the serious may form ulcer, and the contraction of the scar may influence its function. If it splashed into eyes, it may cause burn, and even corneal perforation, eye inflammation and blindness. Chronic influence: teeth acid scarification disease, chronic bronchitis, emphysema and lung sclerosis.

Environmental dangerous:

It is harmful to environment. It can cause pollution to water and soil.

Explosive danger:

This product is combustion, with strong corrosive and stimulate. Besides it can cause human body burns.

Emergency methods

Skin contact:

Get off the contaminative clothes immediately. Wash with large amount of flow water for at least 15 minutes. Go to a doctor.

Eye contact:

Open the eyelid immediately. Use plenty of liquid water or saline wash at least 15 minutes. And go to a doctor.

Inhalation:

Away from the scene and go to the place with fresh air quickly. Keep pneogaster unobstructed. If breathing is difficult, give oxygen. If the breathing is stop, do mouth-to-mouth breathing immediately. And go to a doctor.

Ingestion:

If eat it accidentally, gargle with water immediately. Give milk or albumen and go to a doctor.

Fire protection method

Dangerous properties:

It may give out large amount of heat in water, even boil. It will react vigorously with combustibles (such as benzene) and fuel (such as sugar, cellulose, etc), and even cause burns. It will happen violent reaction when meet calcium carbide, perchlorate, fulminate, nitrate, carbazotate, metal powder, etc, and even explosion or burning. It has strong corrosive and absorbent.

Harmful combustion products:

Sulfur oxide

Extinguishing method :

Firefighters must wear the whole body acid and alkali resistant fire clothing. Extinguishant: dry powder, carbon dioxide and sandy soil. Avoid water impact the products, in case it will release a lot of heat and burn the skin.

Leakage emergency treatment Quickly leave the pollution area and do isolation. Strictly limit in and out. Suggest the emergency treatment personnel wear self-sufficient pressure respirator. Prevent it flow into sewer, pipe or other restricted spaces. Small leakage: use large amounts of water to rinse, and put the water into waste water system after it is diluted. Large amount of leakage: Collect and recycle or transport to the waste disposal sites.
Handling and storage

Operation cautions:

Airtight operation and pay attention to ventilation. The operation should be as mechanization and automation as possible. The operators must receive special training, and abide the procedures strictly. Wear rubber acid alkali resistant clothing.Wear rubber acid alkali resistant glove. Keep away from flame and heat source. Smoking is forbiddened in workplace. Prevent the steam from leaking into the air of work place. Light handling and discharge when transport and avoid the damage of packing and container. When dilute or preparation the solution, should put acid into water, thus avoid boiling and splash.

Directions for storage and transportation:

Stored in cool and ventilated warehouse. The temperature should below 35℃. The relative humidity should no more than 85%. keep the container be sealed. It should be kept away from burning things, reducing agent, alkalies, alkali metal and food chemicals. The storage area should have leakage emergency treatment and suitable asylum materials.

Contact control/individual protection

China MAC(mg/m3):

2

former Soviet Union MAC(mg/m3):

1

TLVTN:

ACGIH 1mg/m3

TLVWN:

ACGIH 3mg/m3

Monitoring method :

Barium cyanide colorimetric method

Engineering control :

Airtight operation and pay attention to ventilation. The operation should be as mechanization and automation as possible. Provide security shower and eye-washing equipment.

Respiratory protection:

If it is possible to touch the smoke, wear gas mask or respirator. If it is emergency, it is suggested to wear oxygen respirator.

Eye protection:

It has been protected in respiratory protection.

Body protection:

Wear rubber acid alkali resistant clothing.

Hand protection:

Wear rubber acid alkali resistant glove.

Other protections:

It is forbiddened to smoke, eat and drink in the job site. Shower and change clothes after work. Separately store the clothes that is toxic contamination. And wash for later use. Keep good health habits.

Physical and chemical properties

Main content:

Content : Industrial 92.5% or 98%

Appearance and properties:

The pure product is colorless transparent oily liquid, and no bad smell.

Melting point (℃):

10.5

Boiling point(℃):

330.0

Relative density(water=1):

1.83

Relative vapor density (air=1):

3.4

Saturated vapor pressure (kPa):

0.13(145.8℃)

Heat of combustion(kJ/mol):

Meaningless

Critical temperature(℃):

No information

Critical pressure (MPa):

No information

Octanol/water distribution coefficient value:

No information

Flash point(℃):

Meaningless

Ignition temperature (℃):

Meaningless

Upper explosive limit %(V/V):

Meaningless

Lower explosive limit%(V/V):

Meaningless

Dissolubility:

Miscible with water

Main usage:

It is used in the production of chemical fertilizer. It is also widely used in chemical industry, pharmaceutical, plastic, dyestuff, petroleum refining and other industries.

Forbidden things Alkalies, alkali metal, water, strong reducing agent, combustible.
Toxicological information

Acute toxicity:

LD50:2140 mg/kg
LC50:510mg/m3, 2 hours (big rat); 320mg/m3, 2 hours (little rat)

Stimulation:

By eyes of home rabbit:1380μg , Severe stimulation

Other harmful effects This product is harmful to environment. Should pay special attention to water and soil pollution.
Abandons handling method Slowly pure into alkali liquor (lime water), and stir constantly. After the reaction is stop, use plenty of water to pure into wastewater treatment system.
Transport information

Dangerous goods number:

81007 

UN Number:

1830

Packing category:

O51

Package method:

Acid altar or ceramic bottles with ordinary wooden case outside it; Glass stoppered bottles or thread glass bottle with ordinary wooden box outside it.

Transport attention matters:

It is forbiddened to transport together with combustibles, reducing agent, alkalies, alkali metal, food chemicals, etc. The transportation bus should equipped with leakage emergency treatments. During the transportation process, it should be avoid sun, rain and high temperature. Don't stay in residential areas and densely populated areas.

Regulatory information

Dangerous chemicals safety management regulations (issued by the State Council in Feb. 17th, 1987). Dangerous chemicals safety management regulations implementation detail rules (Chemical work development [1992] No. 677). Workplace safety use hazardous chemicals regulations ([1996] work department development No. 423). Both above have made corresponding provisions according to the safety use, production, storage, transport, load and unload of hazardous chemicals. Commonly used dangerous chemicals classification and mark (GB13690-92) classified this material as alkaline corrosive product 8.1.

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