GB No. 42002
CAS No. 7440-70-2
Molecular Formula Ca
molecular 40.08

slightly soft silver-white metal and shiny; vapor pressure 1.33kPa.Conclusion (983 ° C); the temperature of 842 ° C; the boiling point 1484 ° C; solubility : not soluble in benzene, alcohol-soluble and insoluble acid, ammonia; density : relative density (water = 1) 1.54; Stability : unstable; dangerous labeling 9 (Spontaneous goods); the main purposes : for aluminum, copper, Lead alloy, the system is also used as the reductant beryllium alloy Deoxidizer, such as oil dehydrogenation

2. The impact on the environment :
a health hazard

pathways : inhaled, ingested.
health hazards : dust inhalation goods stimulate the respiratory tract and lungs, causing coughing, difficulty in breathing. Eye irritation is, or even cause burns, causing permanent damage. Contact with the skin can be induced burns.

two, toxicology information and environmental behavior

hazardous characteristics : fine powder at room temperature encountered moist air can be spontaneous. High fever or contact by strong oxidants, have occurred burning a risk of explosion. Combustion emit toxic smoke irritation. With water or acid reaction of hydrogen and emit heat can cause a fire. Humidity and dust exposure can burn the eyes and skin.
combustion (decomposition) product : calcium oxide.

3. Emergency Monitoring Methods :
Ion Chromatography "ion chromatography rapid determination of calcium and magnesium," Chu Yan / / Ore test .- 1989,8 (2) ~ .133 166

4. Laboratory monitoring methods :
monitoring methods source categories
AAS GB11905-89 water
AAS GB13580.12-92 atmospheric precipitation
EDTA Titration GB7476-87 water
AAS "Solid Waste Analysis Evaluation Manual," the China Environmental Monitoring terminus translated solid waste

5. Environmental standards :
the European Community (1975) drinking water quality standards : guiding standard 100 mg / L; Minimum requirements concentration 10mg/L

6. Emergency treatment and disposal methods :
a leakage contingency

isolation leak contaminated areas, restricting access. Cut off the fire source. Recommended emergency personnel wearing self-contained breathing apparatus, wearing fire protective clothing. Do not direct contact with leakage. A small leak : rinse with plenty of water, diluted Add Water Wastewater System. Large Leak : water wettability, and then transported to collect recycling or waste disposal sites to dispose of.

two protective measures

respiratory protection : its possible exposure to dust, wear headgear electric powered air-purifying respirators and dust.
eye protection : Respiratory Protection has been protective.
physical protection : wear protective clothing 52,400.
hand protection : Wear rubber gloves.
other : no smoking scene work.

three, and emergency measures

contact with the skin : immediately stripped of contaminated clothing, with a large number of mobile wash, at least 15 minutes. Medical treatment.
eye contact : immediately filed eyelid, with a large number of mobile water or saline thoroughly washed at least 15 minutes. Medical treatment.
Inhalation : rapidly from the scene to fresh air. To keep the airway patency. If breathing is difficult, give oxygen. If breathing stop immediately mouth. Medical treatment. Fresh into
: oral intake of water were found to blues or egg white. Medical treatment.

fire : no water, halohydrocarbon extinguishant rescue, it is appropriate not carbon dioxide fire extinguishing. The fire, the fire extinguishing agent such as the improper selection, but also there was a fierce reaction, which led to an explosion, we must pay particular attention to fire safety of the rescue. Extinguishant : dry graphite powder, soda ash, sodium chloride powder.