Zinc sulfate heptahydrate is a chemical substance, which is generally white crystalline powder.
The English name is zinc sulfate heptahydrate; Nickname: zinc alum, white alum
Odor: No odor; Appearance: White crystalline powder
Grade: Industrial grade, fertilizer grade
component
The zinc content of Zinc sulfate heptahydrate is not less than 21.5%
Nickname: zinc alum, white alum Odor: odorless.
Basic information
CAS No.: 7446-20-0
EINECS NO.: 231-793-3
Molecular formula: ZnSO4 · 7H2O
Appearance: White crystalline powder grade industrial grade.
Hazard
Hazard Category: Medium
Health hazard: This product has moderate eye irritation and no skin irritation. Misadministration can cause acute gastroenteritis symptoms such as nausea, vomiting, abdominal pain, diarrhea, and in severe cases, dehydration, shock, and even death.
Environmental hazard: It is harmful to the environment and can cause pollution to water bodies.
Explosion hazard: This product is non flammable and irritating.
Skin contact: Remove contaminated clothing and rinse with flowing water.
Eye contact: Lift the eyelids and rinse with flowing water or physiological saline. Seek medical attention.
Inhalation: Quickly remove from the scene to a place with fresh air. Maintain unobstructed respiratory tract. If breathing is difficult, administer oxygen. If breathing stops, immediately perform artificial respiration. Seek medical attention.
Ingestion: Rinse mouth with water and drink milk or egg white. Seek medical attention.
Hazard characteristics: It cannot burn itself. Toxic gases are released by high-temperature decomposition.
Harmful combustion product: sulfur oxide.
Fire extinguishing method: Firefighters must wear full body fire and gas resistant clothing and extinguish the fire upwind. When extinguishing a fire, try to move the container from the fire site to an open area as much as possible. Then select appropriate extinguishing agents based on the cause of the fire.
Operational storage
Closed operation, local ventilation. Prevent dust from being released into the workshop air. Operators must undergo specialized training and strictly adhere to operating procedures. It is recommended that operators wear self-priming filter type Dust mask, chemical safety goggles, rubber acid and alkali resistant clothing, and rubber acid and alkali resistant gloves. Avoid generating dust. Avoid contact with oxidants. Equipped with leakage emergency response equipment. Empty containers may have residual harmful substances.
Store in a cool and ventilated warehouse. Keep away from sparks and heat sources. Prevent direct sunlight. Packaging sealing. It should be stored separately from oxidants and should not be mixed for storage. The storage area should be equipped with suitable materials to contain leaks.
Leakage handling
Emergency response: isolate the contaminated area and restrict access. It is recommended that emergency personnel wear Dust mask and general work clothes. Do not come into direct contact with leaks. Small leakage: Avoid dust, sweep carefully, collect and transport to a waste disposal site for disposal. Large amount of leakage: collected and recycled or transported to a waste treatment site for disposal.
purpose
It is the main raw material for manufacturing lithopone and zinc salts, and can also be used as a printing and dyeing mordant, a preservative for wood and leather, and a medical emetic. It can also be used to prevent diseases in fruit tree nurseries and manufacture cables. It is also an important auxiliary raw material for the production of viscose fiber and Vinylon fiber. In addition, it is also applied in the electroplating and electrolysis industries.
Individual protection
Occupational exposure limit
China MAC (mg/m3): No standard established
Former Soviet MAC (mg/m3): No standard established
TLVTN: No standards established
TLVWN: No standards established
Monitoring method:
Engineering control: closed operation, local ventilation.
Respiratory system protection: When the dust concentration in the air exceeds the standard, you must wear a self-priming filtering Dust mask. When rescuing or evacuating in an emergency, an air respirator should be worn.
Eye protection: Wear chemical safety goggles.
Body protection: Wear rubber acid and alkali resistant clothing.
Hand protection: Wear rubber acid and alkali resistant gloves.
Other protections: Smoking, eating, and drinking are prohibited in the workplace, and hands should be washed before meals. After work, take a shower and change clothes. Maintain good hygiene habits.
Physical and chemical properties
Main ingredients:
Appearance and properties: Colorless rhombic crystals, particles or powders, odorless, with a astringent taste.
PH:
Melting point (℃): 100
Boiling point (℃):>500 (decomposition)
Relative density (water=1): 1.957
Relative vapor density (air=1): No data available
Saturated Vapor pressure (kPa): no data
Heat of combustion (kJ/mol): meaningless
Critical temperature (℃): meaningless
Critical pressure (MPa): meaningless
Logarithmic value of octanol/water Partition coefficient: no data
Flash point (℃): meaningless
Ignition temperature (℃): meaningless
Upper explosion limit% (V/V): meaningless
Lower explosive limit% (V/V): meaningless
Solubility: Easily soluble in water.
Main uses: It is used in the manufacture of Lithopone, as a mordant, Astringent, wood preservative, etc.
Other physicochemical properties: 1.484
Safety terminology
If swallowed accidentally, seek medical attention immediately and show its container or label.
S60 The substance and its container must be disposed of as hazardous waste.
S61 Avoid release to the environment. Refer to the special instructions/safety data sheet.
Prohibited compound
Prohibited compound: Strong oxidant.
toxicology
Acute toxicity: LD50: 2150 mg/kg (oral administration to rats)
LC50: No data available
Subacute and chronic toxicity:
Irritability:
Sensitization:
Mutagenicity:
Teratogenicity:
Carcinogenicity:
ecology
edit
Ecological toxicological toxicity:
Biodegradability:
Non Biodegradability:
Bioaccumulation or bioaccumulation:
Other harmful effects: This substance is harmful to the environment and special attention should be paid to pollution of water bodies.
Waste disposal
Nature of waste:
Waste disposal method: Dissolve in water or an appropriate acid solution when the amount is small, or convert it into an aqueous solution using an appropriate oxidant. Precipitate with sulfides and adjust the pH to 7 to complete the precipitation. Filter out solid sulfides for recovery or burial disposal. Neutralize the excess sulfide with Sodium hypochlorite and flush it into the sewer.
Disposal precautions:
Transportation information
Dangerous goods number: No information available
UN Number: UN3077 Class 9 Miscellaneous Dangerous Goods
Packaging Mark:
Packaging category:
Packaging method: No information available.
Transportation precautions: The packaging should be complete during transportation and the loading should be stable. During transportation, it is necessary to ensure that the container does not leak, collapse, fall, or be damaged. It is strictly prohibited to mix and transport with oxidants, edible chemicals, etc. During transportation, it is necessary to prevent exposure to sunlight, rain, and high temperatures. The vehicle should be thoroughly cleaned after transportation. During road transportation, it is necessary to follow the prescribed route.
Regulatory Information
The Regulations on the Safety Management of Chemical Hazardous Materials (issued by the State Council on February 17, 1987), the Implementation Rules for the Safety Management of Chemical Hazardous Materials (Hualaofa [1992] No. 677), and the Regulations on the Safe Use of Chemicals in the Workplace ([1996] No. 423) have all made corresponding provisions for the safe use, production, storage, transportation, loading and unloading of chemical hazardous materials.
