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Potassium nitrate

Số CAS
7757-79-1
Khối lượng phân tử
101.10
Công thức phân tử / ký hiệu hóa học
KNO3

Mô tả

Apearances: Colorless transparent prismatic or white granules or crystalline powder. Taste spicy and salty cool feeling. Slightly hygroscopic, hygroscopicity than nitrite. 400 ℃ decomposition escaping oxygen. The 1g Products dissolved in 2.8ml cold water, 0.5ml boiling water, 620ml ethanol. Soluble in glycerin, insoluble in anhydrous ethanol. Can absorb heat when dissolved in water to reduce the temperature. The pH of the aqueous solution is about 7. The relative density of 2.109. Melting point 334 ℃. Strong oxidizing with organic friction or impact can cause a fire or explosion. The median lethal dose (rabbit, oral) 1.166g (anion) / kg.

ỨNG DỤNG

Foliar spray fertilizer for fireworks, gunpowder, matches, fuse, wick, tobacco, color TV picture tube, drugs, chemical reagents, catalysts, ceramic glaze, glass, fertilizer, and flowers, vegetables, fruit trees and other cash crops and so on. In addition, the metallurgical industry, food industry, such as potassium nitrate used as accessories.

Keywords:Surface treatment chemicals



 

Phiếu kiểm nghiệm

Product name

Potassium nitrate

CAS: 7757-79-1

Apearances

Colorless transparent prismatic or white granules or crystalline powder

TEST ITEMS

TEST RESULT

(GR)

(AR)

(CP)

KNO3

≥99.0

≥99.0

≥98.5

Clarity Test

Qualified

Qualified

Qualified

Water insoluble matter

≤0.002

≤0.004

≤0.006

Iodate (IO3)

≤0.0005

≤0.0005

≤0.002

Total chlorine (Cl)

≤0.0015

≤0.003

≤0.005

Sulfate (SO4)

≤0.002

≤0.003

≤0.01

Nitrite (NO2)

≤0.001

≤0.001

≤0.002

Heavy metals (Pb)

≤0.0003

≤0.0005

≤0.001

NH4

≤0.001

≤0.001

≤0.005

Fe

≤0.0001

≤0.0002

≤0.0005

Ca

≤0.001

≤0.004

≤0.006

Mg

≤0.001

≤0.002

≤0.05

Na

≤0.02

≤0.02

≤0.05

Phosphate (PO4)

≤0.0005

≤0.0005

≤0.001