At normal temperature, Zinc sulfate heptahydrate is a white particle or powder, orthogonal crystal, with convergence, and is a commonly used Astringent, which will be weathered in dry air. When heated to 30 ℃, one molecule of Water of crystallization will be lost; when heated to 100 ℃, six molecules of Water of crystallization will be lost; when heated to 280 ℃, seven molecules of Water of crystallization will be lost; when heated to 767 ℃, it will be decomposed into zinc oxide and Sulfur trioxide. Soluble in water, slightly soluble in ethanol and glycerol. Sealed storage is required. It is mainly used as the raw material for manufacturing zinc, barium and other zinc salts, as well as an important auxiliary raw material for viscose fiber and Vinylon fiber, etc. It is also used as a printing and dyeing mordant, wood and leather preservation agent, bone glue clarification and preservation agent, medical emetic agent and Fungicide, and as a trace element fertilizer in agriculture.
Chinese name: Zinc sulfate heptahydrate
English name: Zinc sulfonate Heptahydrate
Alternative name: Haofan; Zinc alum; Zinc sulfate (medicinal); Zinc sulfate, heptahydrate; Zinc sulfate heptahydrate
Chemical formula: ZnSO4 · 7 (H2O)
Molecular weight: 287.55
CAS login number: 7446-20-0
Melting point: 100 ℃
Water solubility: 960 g/L
Density: 1.957
Basic information
Chinese name: Zinc sulfate heptahydrate
English name: Zinc sulfonate Heptahydrate
Chinese alias: Haofan; Zinc alum; Zinc sulfate (medicinal); Zinc sulfate, heptahydrate; Zinc sulfate heptahydrate; Zinc sulfate hexahydrate; Hydrated Zinc sulfate
English alias: Zinc sulfonate, heptahydrate; Zinc Sulphat; Heptahydrate; Sulfuricacid, zincsat (1:1), heptahydrate; Whitevitriol (heptahydrate); Zincsulfate (1:1) heptahydrate; Zincsulfate heptahydrate (1:1:7); Zinesulfate, medical; SALT OF VITRIOL; SULFURIC ACID ZINC SALT HEPTAHYDRATE; ZINC SULFATE, 7-HYDRATE; ZINC SULFATE, HYDRAUS; ZINC SULPHATE 7H20; ZINC SULPHATE HEPTAHYDRATE; ZINC VITRIOL HEPTAHYDRATE; ZINC SULFATE HEPTA; ZINC SULPHATE HEPTA
CAS number: 7446-20-0
Molecular formula: ZnSO4 · 7 (H2O)
Molecular weight: 287.55
Melting point: 100 ℃
Density: 1.957
Water solubility: 960 g/L
Physical and chemical properties
Character: Colorless rhombic prism shaped crystal.
Melting point: 100 ℃
Relative density: 1.957
Solubility: Easily soluble in water. Slightly soluble in alcohol and glycerol.
Usage: Used as a mordant, wood preservative, bleaching agent in the papermaking industry, as well as in pharmaceuticals, artificial fibers, electrolysis, electroplating, pesticides, and the production of zinc salts.
security information
Dangerous goods markings Xn, N, Xi
Hazard category codes 22-41-50/53-36/38
Safety instructions 22-26-39-46-60-61-25
Dangerous goods transport number UN 3077 9/PG 3
WGK Germany 3
RTECS number ZH5300000
Customs code 28332600
Physical property data
1. Character: Colorless rhombic prism shaped crystal.
2. Density (g/mL, 25/4 ℃): 1.957
3. Relative vapor density (g/mL, air=1): None available
4. Melting point (o C): 100
5. Boiling point (o C, atmospheric pressure): None available
6. Boiling point (o C, 5.2kPa): None available
7. Refractive index: None available
8. Flash point (o C): None available
9. Specific rotation (o): None available
10. Self ignition point or ignition temperature (o C): None available
11. Vapor pressure (kPa, 25 o C): unavailable
12. Saturated Vapor pressure (kPa, 60 o C): unavailable
13. Heat of combustion (KJ/mol): unavailable
14. Critical temperature (o C): None available
15. Critical pressure (KPa): None available
16. Logarithmic value of oil-water (octanol/water) Partition coefficient: None available
17. Upper explosion limit (%, V/V): None available
18. Lower explosive limit (%, V/V): None available
19. Solubility: Easily soluble in water. Slightly soluble in alcohol and glycerol. Insoluble in liquid ammonia and ketones. Gradually weathered in dry air.
Properties and Stability
1. It is easily soluble in water (96.5g/100ml water at 20 ℃; 663.6g/100ml water at 100 ℃). Slightly soluble in alcohol and glycerol.
2. Gradually weathering in dry air. At 280 ℃, all Water of crystallization is lost and Anhydrous is formed, which is decomposed above 500 ℃.
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
1. Used for preparing zinc supplements, astringents, etc.
2. Used as a mordant, wood preservative, bleaching agent in the papermaking industry, as well as in pharmaceuticals, artificial fibers, electrolysis, electroplating, pesticides, and the production of zinc salts.
3. Zinc sulfate is a supplement of zinc in feed, a component of many enzymes, proteins, ribose, etc. in animals, participates in carbohydrate and fat metabolism, and can catalyze the mutual transformation of Pyruvic acid and lactic acid to promote growth. Zinc deficiency is easy to cause incomplete Keratosis, dysplasia and hair deterioration, and can affect animal reproductive function and use.
4. Zinc sulfate is a permitted food zinc fortifier. According to Chinese regulations, it can be used for table salt at a dosage of 500mg/kg; 113-318mg/kg in infant and toddler food; 130-250mg/kg in dairy products; 80-160rag/kg in grains and their products; 22.5-44mg/kg in beverages and dairy beverages.
5. Used for artificial fiber coagulant. In the printing and dyeing industry, it is used as a mordant and an alkali resistant agent for dyeing with blue salt. It is the main raw material for manufacturing inorganic pigments (such as lithopone), other zinc salts (such as Zinc stearate, basic Zinc carbonate) and zinc containing catalysts. Used as a preservative for wood and leather, as well as a clarifying and preserving agent for bone glue. The pharmaceutical industry is used as an emetic. It can also be used to prevent diseases in fruit tree nurseries and to manufacture cables and zinc fertilizers.
Individual protection
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.
Transportation information
Dangerous goods number: No information available
UN Number: UN3077 Class 9 Miscellaneous Dangerous Goods
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.
Safety terminology
Do not break the dust
Do not inhale dust.
In case of contact with eyes, rinse immediately with substance of water and seek medical advice
After accidental contact with eyes, immediately rinse with plenty of water and seek medical advice.
Wear eye/face protection
Wear goggles or masks.
If allowed, seek medical advice immediately and show this container or label
If swallowed accidentally, seek medical attention immediately and show its container or label.
This material and its container must be disposed of as hazardous waste
The substance and its container must be disposed of as hazardous waste.
Avoid release to the environment Refer to special instructions/safety data sheets
Avoid release into the environment. Refer to the special instructions/safety data sheet.
Risk terminology
Harmful if swallowed
Harmful if swallowed.
Risk of series damage to the eyes
Serious damage to the eyes.
Very toxic to aquatic organisms, may cause long term adverse effects in the aquatic environment
It has extremely high toxicity to aquatic organisms and may have long-term adverse effects on the water environment.
