Name | ammonium iodate |
Synonyms | Ammonium iodate AMMONIUM IODATE ammonium iodate AMMONIUM TRIIODATE Iodicacid,ammoniumsalt AMMONIUM IODATE REAGENT Iodicacid(HIO3)ammoniumsalt iodicacid(hio3),ammoniumsalt AMMONIUM IODATE, FOR ANALYSIS |
CAS | 13446-09-8 |
EINECS | 236-592-4 |
InChI | InChI=1/HIO3.H3N/c2-1(3)4;/h(H,2,3,4);1H3 |
Molecular Formula | H4INO3 |
Molar Mass | 192.94 |
Density | 3.309g/mLat 25°C(lit.) |
Melting Point | 150°C (dec.)(lit.) |
Water Solubility | Soluble in water 20.6 g/L @ 20°C |
Appearance | Powder |
Specific Gravity | 3.309 |
Color | White |
Stability | Stable. Oxidizer - contact with combustible material may lead to fire. Incompatible with organics, combustible materials, reducing agents, powdered metals. May be light sensitive. |
Sensitive | Moisture Sensitive |
Hazard Symbols | O - Oxidizing agent |
Risk Codes | R8 - Contact with combustible material may cause fire R36/38 - Irritating to eyes and skin. |
Safety Description | S17 - Keep away from combustible material. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
UN IDs | UN 1479 5.1/PG 2 |
WGK Germany | 3 |
TSCA | Yes |
HS Code | 28299080 |
Hazard Class | 5.1 |
Packing Group | II |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
introduction | ammonium iodate is colorless orthorhombic or monoclinic crystal or powder. Ammonium iodate is heated to 150 ℃ for decomposition, slightly soluble in water and soluble in ethanol. Ammonium iodate is a strong oxidant in acidic medium, which reacts with iodide ions to quantitatively precipitate iodine molecules. |
Application | Ammonium iodate is an inorganic ammonium salt used as an analytical reagent. |
synthesis method | 1, after water cooling from concentrated ammonia water, stirring and mixing while adding a small amount of iodine, heating and reacting the mixed solution, evaporating and concentrating, cooling and crystallization; Centrifugal separation and drying are prepared. It can also be prepared by metathesis reaction of barium iodate and ammonium sulfate aqueous solution. 2. Add 280mL 10% ammonia water (twice as much as theoretically required) and 600mL 3% hydrogen peroxide (excess 33%) to 100g of crushed iodine, and stir until the reaction mixture is yellow (sometimes a little more hydrogen peroxide is required). This solution is evaporated in a water bath until crystallization is precipitated. 3. Mix hydroiodic acid solution with ammonia water or ammonium carbonate aqueous solution according to stoichiometry, and evaporate the mixture until crystallization. Reaction equation: 2NH3 + HI--NH4I or 2HI +(NH4)2CO3--2NH4I + H2O + CO2. |
solubility in water (g/100ml) | dissolved grams per 100ml of water: 2.6g/20 ℃ |
Use | Used as analytical reagent and oxidant Used as oxidant and analytical reagent. |
production method | 1. after water cooling from concentrated ammonia water, stirring and mixing while adding a small amount of iodine, heating and reacting the mixed solution to evaporate excess ammonia, evaporating and concentrating, cooling and crystallizing; Centrifugal separation and drying are prepared. It can also be prepared by metathesis reaction of barium iodate and ammonium sulfate aqueous solution. 2. Add 280mL 10% of ammonia water (twice as much as theoretically required) and 600mL 3% of hydrogen peroxide (excess 33%) to 100g of crushed iodine, and stir until the reaction mixture is yellow (sometimes a little more hydrogen peroxide is required). This solution is evaporated in a water bath until crystallization is precipitated. Preparation method 2NH3 + HINH4I or 2HI +(NH4)2CO32NH4I + H2O + CO2. Hydroiodic acid solution is mixed with ammonia water or ammonium carbonate aqueous solution according to stoichiometry, and the mixture is evaporated until crystallization is precipitated. |