国标编号 83002
CAS�?7788-97-8
分子�?CrF₃
分子�?109.01

green powder or crystal; Boiling Point 1100 ~ 1200 ° C / sublimation; the temperature> 10 ° C; solubility : not soluble in water, soluble in alcohol, micro-soluble acid, hydrofluoric acid soluble; density : relative density (water = 1) 3.78; Stability Qualitative : stability; risk Marker 20 (corrosive); the main purposes : for printing and dyeing industry, for the woolen fabric decay agent, halogenated catalyst, marble sclerosis and coloring agent

2. The impact on the environment :
a health hazard

pathways : inhaled, ingested.
health hazards : corrosive. Heat generated by the decomposition of hydrogen fluoride and other toxic gases.

two, toxicology information and environmental behavior

hazardous characteristics : high fever by decomposition and emit smoke irritation.
combustion (decomposition) products : hydrogen fluoride.

3. Emergency Monitoring Methods :
speed test tube method

4. Laboratory monitoring methods :
ion selective electrode (GB7484-87, Water), filter paper
lime-fluoride ion selective electrode (GB/T15433-95, air)
membrane fluoride ion selective electrode (GB/T15434-95, air)

5. Environmental standards :
China (TJ36-79) Workshop harmful substances in the air that the maximum allowable concentration 1mg/m3 [F]
China (TJ36-79) Residential District of harmful substances in the atmosphere the maximum allowable concentration (fluoride) 0.02mg/m3 (a value); 0.007mg/m3 (days average)
Chinese (GB16297-1996) Air Pollutant Discharge Standards (fluoride) �?maximum allowable concentration of emissions :
9-90mg/m3 (Table 2); 11-100mg/m33 (Table 1)
�?maximum allowable emission rate (kg / h) :
two :0.10-4 .2 (Table 2); 0.12-4.9 (Table 1)
three :0.15-6 .3 (Table 2); 0.18-7.5 (Table 1) 0.02mg/m3 (Table 2); 0.02mg/m3 (Table 1)
China (GB5048-92), irrigation water quality standards (fluoride) 2. 0 ~ 3.0mg / L (water and dry vegetables)
Chinese (GB11607-89) Fisheries water quality standards 1 mg / L (fluoride)
China (GB5749-85) health standards for drinking water 1.0 mg / L (fluoride)
China (GB/T14848-93) groundwater quality standards (mg / L) Class I 1.0; Type II 1.0; Class III 1.0; category IV 2. 0; category V 2.0 and above (fluoride)
China (GHZB1-1999), surface water quality standard (mg / L) of the following Class I 1.0; Type II 1.0; Class III 1.0; category IV 1.5; category V 1.5 (fluoride)
China (GB8978-1996) sewage discharge standards (mg / L), a 10; two 10 ~ 20; three 20 ~ 30 (fluoride)
China (GB5058.3-1996), solid waste leaching toxic identification standard value of 50 mg / L (fluoride)

6. Emergency treatment and disposal methods :
a leakage contingency

isolation leak contaminated areas, restricting access. Recommended emergency personnel wearing self-absorption filter respirators, wearing anti-acid dress. Do not direct contact with leakage. A small leak : to avoid dust, with the clean-shovel collection in a dry, cleanliness, covered containers. Large Leak : plastic sheeting, canvas cover and reduce dispersion. The collection then shipped to recycling or waste disposal sites.

two protective measures

Respiratory Protection : Air dust concentrations exceeding the recommended wearing self-absorption filter respirators.
eye protection : Wear protective safety glasses.
protective clothing : Anti-corrosion wear uniforms.
hand protection : Wear gloves against chemicals.
other : the workplace ban on smoking, eating and drinking water, wash hands before eating. To maintain good health habits. Implementation of pre-employment and periodic medical examinations.

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 rinse thoroughly, 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 fighting methods : fire-extinguishing agent : water, carbon dioxide and sand.