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Calcium nitrate
English name: Calcium nitrate
Molecular formula: Ca (NO3) 2 · 4H2O
Molecular weight: 236.15
CAS Number: 13477-34-4
Physical and chemical properties: colorless crystal, easily deliquescent, with two types of crystals, A-shaped crystal, relative density 1.896, melting point 39.7 ℃, decomposes when heated to 132 ℃. Dissolve in water, ethanol, and acetone. Insoluble in nitric acid, oxidizing, can cause combustion when in contact with flammable materials, corrosive, and can cause burns.
Usage: Used as an analytical reagent and as a chromogenic agent in the detection of diphenylamine by thin-layer chromatography. It is also used as fireworks material and in the electronics, instrumentation, and metallurgical industries.
Execution standard: HG/T 3787-2005
Product parameters:
Indicator Description | High purity grade | Industrial grade |
Calcium nitrate tetrahydrate main content% ≥ | 99 | 98 |
Clarity experiment | Qualified | -- |
Water insoluble matter% ≤ | 0.003 | 0.1 |
Chloride (Cl) mass fraction% ≤ | 0.003 | 0.015 |
Iron (Fe) mass fraction% ≤ | 0.0002 | 0.001 |
PH value (50g/L solution) | -- | 1.5~7.0 |
Indicators for agricultural calcium nitrate:
Indicator Description | Agricultural Grade |
Total nitrogen (N),% | ≥11.0 |
Calcium (Ca),% | ≥16.0 |
Water insoluble matter% | ≤0.1 |
PH value (250 fold dilution) | 5.0~7.0 |
Moisture% | ≤5 |
Mercury Hg, mg/kg | ≤5 |
Arsenic As, mg/kg | ≤10 |
Cadmium Cd, mg/kg | ≤10 |
Lead Pb, mg/kg | ≤50 |
Chromium Cr, mg/kg | ≤50 |
Manufacturing
