GB No. 61007
CAS No. 1327-53-3
Molecular Formula As₂O₃
molecular weight 197 .84

colorless and tasteless white powder; 13.33kPa vapor pressure (332.5 ° C); melting point 315 ° C; boiling point of 457.2 ° C; solubility : Micro-insoluble in water, soluble in acid, alkali; density : relative density (water = 1) 3.86; Stability : stability; risk Marker 13 (inorganic Judaipin); the main purposes : for glass, ceramics, paints and pesticides industries, leather preservation agents

2. The impact on the environment
a health hazard

pathways : inhaled, ingested.
health hazards : mainly affect the nervous system and capillary permeability of the skin and mucous membranes have a stimulating effect.
acute poisoning : Oral poisoning nausea, vomiting, abdominal pain, bowel movements sometimes mixed with blood, limbs, cramps, oliguria, anuria coma, convulsions, respiratory paralysis and death. In acute poisoning occurred within 1-3 weeks of peripheral neuropathy. May occur toxic myocarditis, hepatitis. Inhaling can cause acute poisoning, but gastrointestinal symptoms light, means (toe) A, m there's profile.
chronic poisoning : gastrointestinal symptoms, liver and kidney damage, skin pigmentation, hyperkeratosis, or verrucous hyperplasia, and multiple peripheral neuritis. May cause lung cancer, skin cancer.

two, toxicology information and environmental behavior

toxicity : high toxicity category.
acute toxicity : LD₅₀20mg/kg (rat oral); Niacinamide (mice by mouth).
irritation : a rabbit eyes : 50ug (24 hours), the severe stimulation. Percutaneous rabbits : 5 mg (24 hours), the severe stimulation.
subacute and chronic toxicity : the rats goods 150mg intake (kg day), a total of 6.5 months to animals Growth mild; Liver and kidney weight increased significantly, but the kidney functions were normal and routine; Following 30mg/kg, animals the main organs without pathological changes.
Mutagenicity : Inhibition of DNA 500umol Hela cells / L, respectively. Cytogenetic analysis : human interleukin 1200nmol / L, respectively.
reproductive toxicity : mouse inhalation poisoning minimum concentration (TCL0) : 28500ug/m3 (4 hours and progesterone 9 ~ 12 days), and caused cytology change the normal development of skeletal muscle.
cancer : IARC carcinogens comments : positive people; Animals not clear.

hazardous characteristics : In case of high fever, sublimation have toxic gases.
combustion (decomposition) product : oxidation of arsenic.

3. Scene emergency monitoring methods

4. Laboratory monitoring methods
two ethyl 2 AgDDTC method "of harmful substances in the air of Determination" (second edition), Hang with disabilities editor
-hydride generation atomic absorption method "of harmful substances in the air of Determination" (second edition), Hang Shi-ping editor

5. Environmental standards
China (TJ36-79) Workshop harmful substances in the air that the maximum allowable concentration 0.3mg/m3
the former Soviet Union (1975) Harmful Substances in Water maximum allowable concentration of 0.05mg / L (+ As3 dollars)

6. Emergency treatment and disposal methods

a leakage contingency

isolation leak contaminated areas, restricting access. Recommended emergency personnel wearing self-Pressurized respirators to wear protective clothing. Do not direct contact with leakage. A small leak : Dust to avoid using cleaner shovel collection in a dry, clean, covered containers. Large Leak : plastic sheeting, canvas cover and reduce dispersion. Then the collection, recycling or shipped to the disposal of waste disposal sites.

two protective measures

respiratory protection : its possible exposure to dust, should wear headgear electric powered air-purifying respirators and dust. When necessary, air respirators to wear.
eye protection : Respiratory Protection has been protective.
physical protection : Cruise-wear protective clothing 52,400.
hand protection : Wear rubber gloves.
other : work site prohibit smoking, eating and drinking. Work to complete, thorough cleansing. Separate storage of toxic pollution by the clothes, washed standby. Implementation of pre-employment and periodic medical examinations.

three, and emergency measures

contact with the skin : stripped of contaminated clothing, use soap and water thoroughly washed skin, for medical treatment.
eye contact : Did eyelid, mobile or saline irrigation water and 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
: the symptoms. Gastrolavage to blues or egg white. Medical treatment.

fire fighting methods : fire officers must wear special body protective clothing. Extinguishant : dry powder, water and sand.