Zhengzhou Kailan Water Purification Materials Co., Ltd
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Zinc sulfate is colorless or white crystal, particle or powder, also known as alum. Odorless. It tastes astringent. Weathering in dry air, loss of all crystal water at 280 ℃, decomposition above 500 ℃. 1g soluble in 0.6ml water, 2.5ml glycerol, insoluble in ethanol 。 The aqueous solution is acidic to litmus, with pH about 4.5. The crystal water containing 1 molecule is less likely to agglomerate. The relative density is 1.97. Melting point 100 ℃. Lower lethal dose (rat, oral) 2200mg/kg. Reactivity. For manufacturing Lithopone And used as mordant, astringent, wood preservative, etc.
physical property
CA S # 7733-02-0
EINECS No. 231-793-3
Appearance and properties: colorless rhombic crystal, particle or powder, odorless, astringent.
Melting point (℃): 100
Relative density (water=1): 1.957
Boiling point (℃):>500 (decomposition)
Molecular formula: ZnSO4 · 7H2O
Solubility: easily soluble in water.
Use of industrial grade zinc sulfate
1. Refined grade: mainly used for chemical reagents, pharmaceutical manufacturing and electronic materials.
2. Chemical fiber grade: used for the manufacture of chemical fibers.
3. Lithopone: used to make Lithopone white pigment.
4. Beneficiation grade: used for extracting zinc ore from polymetallic minerals.
5. Plating grade: used for galvanizing metal surface.
6. Sewage treatment: a raw material used directly as sewage treatment agent to manufacture sewage treatment agent.
Feed grade zinc sulfate door It is used in feed processing as an additive to make zinc reach a certain value.
The application of agricultural grade zinc sulfate in agriculture is to make the soil contain a certain amount of zinc to ensure the trace elements needed for plant growth (except for spraying fertilizer outside the root). Although its processing process and use method are different, the purpose is the same
1. It is used for the top dressing outside the root of fruit trees by foliar spraying.
2. It is used as base fertilizer to supplement the missing zinc element in the soil according to the soil determination.
3. Compound fertilizer manufacturing: zinc is added in the manufacturing of compound fertilizer to make zinc reach certain indicators to meet the needs of plant growth.
4. Biological fertilizer manufacturing in the agricultural production system, add a certain amount of zinc fertilizer to the biological fertilizer for compound, and increase the zinc element in the soil.
