Cas number 7681-82-5
Molecular formula NaI
Molecular weight 149.89
Sodium iodide
White cubic crystal or powder. Odorless, bitter and bitter. It is easily soluble in water, ethanol, acetone, glycerin, liquid ammonia, liquid sulfur dioxide, and the aqueous solution is slightly alkaline. Deliquescent, absorbing water in the moist air and clotting. It gradually decomposes on contact with air to precipitate iodine, which gradually becomes brown.
Density: 3.67
Melting point: 651 ℃
Boiling point: 1304 ℃ Q / (HG) SJ 032-91
Item Item Analysis and Purification
(AR) (CP)
Content (NaI) Assay,% ≥99.5 99.0
Insiluble matter in water,% ≤0.0050.005
Chloride (Cl),% ≤0.03 0.1
Iodate (IO3) Iodate,% ≤0.005 0.01
Sulfate (SO4) Sulfate,% ≤0.005 0.01
Total nitrogen,% ≤0.001 0.005
Magnesium (Mg),% ≤0.005 0.001
Calcium,% ≤0.001 0.005
Iron (Fe) Iron,% ≤0.00020.0005
Barium (Ba),% ≤0.00005 0.0001
Heavy metals (as Pb) Heavy metals,% ≤0.00050.001
ACS Grade Project Name ACS Grade
Assay ≥99.5%
"pH (5%, 25.0 ℃)" pH of a 5% solution at 25.0 ℃ 6.0-9.0
Insoluble matter≤0.01%
Chloride and bromide (calculated as Cl) Chloride and bromide ≤0.01%
Iodate (IO3) Iodidi ≤0.0003%
Phosphate (PO4) Phosphate≤0.001%
Sulfate (SO4) Sulfate≤0.005%
Barium ≤0.002%
Heavy metals (calculated as Pb) Heavy metals≤5ppm
Iron (Fe) Iron≤5ppm
Calcium Calcium ≤0.002%
Magnesium (Mg) ≤0.001%
Potassium (K) Potassium ≤0.01% sealed and protected from light.
Product use The chemical industry is used as an important raw material for the preparation of inorganic and organic iodides. It is also used as a co-solvent for iodine and for the preparation of iodine emulsions. The pharmaceutical industry is used to produce expectorants and diuretics. The photosensitive industry is used as a sensitizer for film, and it is used as spot analysis and other analytical reagents in analytical chemistry. Used as an oxidant in chemical reactions.
When the temperature is lower than 65.6 ℃, sodium iodide forms various hydrates with uncertain water content in the aqueous solution. The dihydrate is precipitated from the solution at room temperature as colorless prismatic crystals, and the pentahydrate can be precipitated within 13.5 ～ 31.5 ℃. It reacts with sulfur dioxide to form corresponding stable compounds. It has reducibility and can be oxidized by oxidizing to free iodine.
Kitchen Roll Holder,Under Cabinet Paper Towel Holder,Magnetic Paper Towel Holder,Wall Mount Paper Towel Holder
Fungho Industries (Group) Co., Limited , https://www.funghogroup.com