Home  Products Search  Properties Search  中文版
Home > Dictionary > Information
Sulfuric acid

CAS No. 81007, 7664-93-9
Molecular Formula H2SO4
molecular 98 .08

pure transparent colorless oily liquid, no foul; vapor pressure 0.13kPa (145.8 ° C); the temperature of 10.5 ° C; boiling point of 330.0 ° C; solubility : Compatibility with water; density : the relative density (water = 1) 1.83; the relative density (Air = 1) 3.4; Stability : stability; risk Marker 20 (corrosive acid); the main purposes : for the production of chemical fertilizers, chemicals, pharmaceuticals, plastics, dyes , oil refining and other industries have broad application

2. The impact on the environment :
a health hazard

pathways : inhaled, ingested.
health hazards : the skin, mucous membrane and other organizations have a strong role in stimulating and corrosion. The eyes can cause conjunctivitis, edema, corneal opacity, resulting in blindness; Causing respiratory irritation and severe respiratory difficulties and pulmonary edema; High concentrations cause spasm or supraglottic laryngeal edema and death. After oral administration of the digestive tract caused by burns or ulcers. There may be serious gastric perforation, peritonitis, supraglottic laryngeal spasm and edema and kidney damage, shock. Chronic effects of acid etching dental disease, chronic bronchitis, emphysema and lung sclerosis.

two, toxicology information and environmental behavior

toxicity : is moderately toxic.
acute toxicity : LD5080mg/kg (rat oral); LC50510mg/m3, 2 hours (rat inhalation); 320mg/m3, 2 hours (mouse inhalation)

hazardous characteristics : combustibles (such as benzene) and organic (such as sugar, cellulose, etc.) will contact react violently, or even cause a fire. Some activity with the reaction of metal powder and emit hydrogen. Large heat with water, splashing boiling can occur. With corrosion.
combustion (decomposition) products : sulfur oxides.

3. Emergency Monitoring Methods :
gas detector tube
gas velocity measurement tube (Germany Del products)

4. Laboratory monitoring methods :
barium chromate colorimetry (GB4920-85, sulfate concentration exhaust)
ion chromatography; Diethylamide spectrophotometry "air emission monitoring and analysis methods," Central States ECIC series

5. Environmental standards :
China (TJ36-79) Workshop harmful substances in the air that the maximum allowable concentration drills
China (TJ36-79) Residential District of harmful substances in the atmosphere of the maximum allowable concentration 0.30mg/m3 (a value)
0.10mg/m3 (days average)
Chinese (GB16297-1996) Air Pollutant Discharge Standards (sulfuric acid mist) ?maximum allowable emission concentrations (mg/m3 ) :
70 ~ 1000 (Table 1); 45 to 430 (Table 2)
?maximum allowable emission rate (kg / h) : 1.8
2 ~ 74 (Table 1) ; 1.5 ~ 63 (Table 2)
3 2.8 ~ 110 (Table 1); 2.4 ~ 95 (Table 2)
?unorganized emissions monitoring the concentration limits (mg/m3) : 1.2 (Table 2); 1.5 (Table 1)
Japanese industrial effluent convinces fish died in a concentration of the toxic (lethal concentration) 6.25ppm

6. Emergency treatment and disposal methods :
a leakage contingency

leak contaminated areas evacuated personnel to a safe area, not to prohibit access to the contaminated area, the proposed emergency personnel wearing masks, wearing chemical protective clothing. A reasonable ventilation, not direct contact with the spill, rendering leakage and combustible materials (wood, paper, oil, etc.) contacts to ensure the safety of plugging. Water fog slowed volatile (or spread), but not to spill or leak water directly point. Use sand, dry lime or soda ash mixture, then collect and transport the waste to disposal sites. We could also use a lot of water washing, Add Water dilution of the wastewater system. If large spills, using a causeway asylum, and then to collect, transfer, recycling or waste processed sound.

two protective measures

respiratory protection : its possible exposure to vapor or smoke, wearing gas masks or gas-helmet. Emergency rescue or escape, it is recommended to wear self-contained breathing apparatus.
eye protection : Wear protective chemical safety glasses.
protective clothing : wearing overalls (anti-corrosion material).
hand protection : Wear rubber gloves.
other : work, take a shower. Separate storage of toxic pollution by the clothes, washed reuse. To maintain good health habits.

three, and emergency measures

contact with the skin : the pollution off clothing, immediately wash with water for at least 15 minutes. Or 2% sodium bicarbonate solution rinse. Medical treatment.
eye contact : immediately filed eyelid, mobile or saline irrigation water for at least 15 minutes. Medical treatment.
Inhalation : rapidly from the scene to fresh air. Difficult to breathe oxygen. Give 2-4% sodium bicarbonate solution aerosol inhalation. Medical treatment. Fresh into
: coverage were to milk, egg white, vegetable oil, such as oral, not the symptoms. Immediate medical treatment.

fire fighting methods : sand. Ban water.

Notice:Each item can have many explanations from different angels. If you want grasp the item comprehensively,please see below "more details data".
Please see below "More Detailed Data"
More Detailed Data:
1) Sulfuric acid
2) sulfuric acid
3) sulfuric acid
4) Sulfuric acid;Sulfuric acid, fuming;acide sulfurique
5) sulfuric acid
6) Sulfuric acid, Sulphuric acid
7) disulfuric acid;pyrosulfuric acid
8) pyrosulfuric acid
9) pyrosulfuric acid
10) pyrosulfuric acid
Notice Some description was translated by software and the data is only as a reference.
1) Method and equipment for checking ink content in ink-storage trough
2) Graphic product and its preparing method
3) Indexing system for Chinese characters
4) Pen whose needle head is filled with ink and its special-purpose ink bottle
5) Medium fine shaft pencil and its production method
6) Production method of reflecting ornaments
7) Production method of stereo engraving decorations
8) Connection method of ornament and material to be ornamented
9) Production method of metallic sculptural handicraft
10) Central air-charging and air-discharging system of tyre of heavy cross-country vehicle