Product Name: Sodium hydroxide Level: AR / CP
Implementation of the standards: GB / T 629-1997
Molecular formula: NaOH
Properties: This reagent is uniformly white granular or flaky solid. Easy to absorb carbon dioxide and moisture in the air, soluble in water.
Hazardous characteristics: acid neutralization reactions and exothermic. Aluminum, zinc and tin case is corrosive tide and release flammable hydrogen gas. This product will not burn, water and steam heat large, the formation of corrosive solution. Highly corrosive.
Incompatibility: Strong acids, flammable or combustible, carbon dioxide, peroxide and water.
Items | Indicators | |
AR | CP | |
content（NaOH），% ≥ | 96.0 | 95.0 |
Carbonate (Na2CO3 to count)，% ≤ | 1.5 | 3.0 |
Clarity test | qualified | qualified |
chloride（CL）, % ≤ | 0.005 | 0.01 |
Sulfate（SO4），% ≤ | 0.005 | 0.02 |
Total nitrogen content（N），W/% ≤ | 0.001 | 0.002 |
Phosphate（PO4），% ≤ | 0.001 | 0.002 |
Silicate（SiO3）, % ≤ | 0.01 | 0.05 |
magnesium(Mg), % ≤ | -- | -- |
aluminum(Al）, % ≤ | 0.002 | 0.005 |
Potassium(K), % ≤ | 0.05 | -- |
calcium(Ca), % ≤ | 0.01 | 0.05 |
iron(Fe)，% ≤ | 0.001 | 0.002 |
nickel(Ni) , % ≤ | -- | -- |
Zinc(Zn), % ≤ | -- | -- |
arsenic(As), % ≤ | -- | -- |
Heavy Metals (as Pb), W/% ≤ | 0.003 | 0.003 |