Calcium iodate
Calcium Iodate
CAS: 7789-80-2;10031-32-0
Molecular Formula: CaI2O6
Calcium iodate - Names and Identifiers
| Name | Calcium Iodate |
| Synonyms | autarite Lautarite CALCIUM IODATE Calcium Iodate calcium diiodate iodicacid,calciumsalt CALCIUM IODATE HYDRATE CALCIUM IODATE REAGENT calciumiodate(ca(io3)2) iodicacid(hio3),calciumsalt |
| CAS | 7789-80-2 10031-32-0 |
| EINECS | 232-191-3 |
| InChI | InChI=1/Ca.HIO3.H2O/c;2-1(3)4;/h;(H,2,3,4);1H2/q+2;;/p-1 |
Calcium iodate - Physico-chemical Properties
| Molecular Formula | CaI2O6 |
| Molar Mass | 389.88 |
| Density | 4.520 g/mL (lit.) |
| Melting Point | 540°C |
| Water Solubility | slightly soluble |
| Solubility | ethanol: insoluble(lit.) |
| Vapor Presure | 0Pa at 25℃ |
| Appearance | Powder |
| Specific Gravity | 4.519 |
| Color | white |
| Merck | 14,1676 |
| pKa | 0[at 20 ℃] |
| Stability | Stable. Incompatible with reducing agents, copper, aluminium, alcohols, sulfur, phosphorus. Oxidant - keep away from combustible materials. |
| Physical and Chemical Properties | Colorless orthorhombic crystals or white crystals. Odorless. Boiling Point 783 °c. The relative density was 2.55. Soluble in nitric acid, slightly soluble in water. Six crystals of water were lost at 40 °c and became anhydrous. |
| Use | Used as feed and food additives, also used in pharmaceutical |
Calcium iodate - Risk and Safety
| Risk Codes | R8 - Contact with combustible material may cause fire R36/37/38 - Irritating to eyes, respiratory system 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. S37/39 - Wear suitable gloves and eye/face protection S36 - Wear suitable protective clothing. S16 - Keep away from sources of ignition. |
| UN IDs | UN 1479 5.1/PG 2 |
| WGK Germany | 3 |
| Hazard Class | 5.1 |
| Packing Group | II |
Calcium iodate - Upstream Downstream Industry
| Raw Materials | Iodine |
Calcium iodate - Nature
Open Data Verified Data
colorless orthorhombic crystals or white crystals. Odorless. Boiling Point 783 deg C; Relative density 2. 55. Soluble in nitric acid, slightly soluble in water. Six crystals were lost at 40 °c and became anhydrous.
Last Update：2024-01-02 23:10:35
Calcium iodate - Preparation Method
Open Data Verified Data
potassium iodate was added to a reactor containing distilled water, and calcium nitrate solution was slowly added to react with stirring to generate Calcium iodate and potassium nitrate solution, which was filtered to remove potassium nitrate, arsenic removing agent and heavy metal removing agent are added to purify the solution, and impurities such as arsenic and heavy metals are removed by filtration. The filtrate is prepared by evaporation concentration, cooling crystallization, centrifugal separation and drying.
Last Update：2022-01-01 09:04:05
Calcium iodate - Use
Open Data Verified Data
It is used in the food industry as a wheat flour treatment agent, a dough conditioner, iodination of salt, etc. Bread making is added to wheat flour as a fast-acting oxidant to the dough. Also used as a substitute for oral detergent, deodorant, antiseptic iodoform. FDA(& sect;184, 1206,2000) regulations can be used in bread, the maximum limit of 0075% (based on the amount of wheat flour).
Last Update：2022-01-01 09:04:05
Calcium iodate - Safety
Open Data Verified Data
ADI values were not specified (FAO/WHO,2001). Should be stored in a cool, dark, dry warehouse, the bottle must be sealed, pay attention to moisture. Protection against rain and sun exposure during transport. During loading and unloading, the glass bottle shall be handled with light handling, and vibration and impact are strictly prohibited to prevent breakage of the glass bottle. When there is a fire, it can be suppressed by water, sand and various kinds of fire extinguisher.
Last Update：2022-01-01 09:04:06
Calcium iodate - Reference Information
| LogP | -5.28 at 25℃ |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| solubility in water (g/100ml) | grams dissolved per 100ml of water at different temperatures (℃): 9 × 10-2/30 ℃;0.24g/20 ℃;0.38g/30 ℃;0.52g/40 ℃; 0.65g/60 ℃;0.66g/80 ℃;0.67g/90 ℃ |
| content analysis | accurately weigh about mg of a sample and dissolve it in a mixture of 10ml of 70% perchloric acid and 10ml of water. If necessary, it can be dissolved by heating and diluted to 250.0 with water. Take 50.0ml of this solution and put it in a 70% conical flask with a plug, add 1ml of 0.1 perchloric acid and 5g of potassium iodide, plug it, gently shake it and let it stand for 5min, then titrate it with mol/L sodium thiosulfate, A small amount of starch test solution (TS-235) was added near the end point. 0.1mol/L sodium thiosulfate is equivalent to Calcium iodate [Ca(IO3)2? H2O]3.398mg. |
| toxicity | ADI is not allowed (FAO/WHO,2001). GR.AS(FDA,§ 184.1206,2000). ADI values are not specified (FAO/WHO,1984). Generally Recognized As Safe (U. S. Food and Drug Administration, 1985). The maximum limit is 0.0075% (based on the amount of wheat flour). |
| usage limit | the FDA,§ 184.1206(2000), states that it can be used in bread, based on the amount of wheat flour, not more than 0.0075%. |
| Use | is used in the food industry as a wheat flour treatment agent, a dough conditioner. Bread making is added to wheat flour as a fast-acting oxidant to the dough. Also used as a substitute for oral detergents, deodorants, antiseptic iodoform. as a permitted food iodine fortifier, it is also a Feed Nutrition Fortifier. used as analytical reagent used as feed and food additive, also used in pharmaceutical used for antiseptic deodorization and mouthwash, nutritional iodine in food and feed. the feed industry is used as an iodine additive for premixed feed: the food industry is used as a quality enhancer and preservative; The pharmaceutical industry is used to prepare mouthwashes, iodoform substitutes and trace element additives for nutritional drugs; It can also be used as a deodorizer. wheat flour treatment agent; Dough conditioner. Bread making is added to wheat flour as a fast-acting oxidant for dough. |
| production method | is obtained by reacting calcium hydroxide with iodine. The chlorine gas is passed into the calcium carbonate solution dissolved with iodine to obtain. chlorine gas is introduced into the lime solution containing dissolved iodine and heated for reaction to generate Calcium iodate and Calcium chlorate reaction solution, which is filtered to remove Calcium chlorate, and the filtrate is purified and filtered, the filtrate was concentrated by evaporation, cooled to crystallize, centrifuged and dried to obtain Calcium iodate. (1) direct and method. Chlorine gas was introduced into the mixture of iodine and water at 10-15 °c until complete conversion of iodine to iodic acid, and then calcium hydroxide was added to adjust the PH to 7. The resulting precipitate was washed and dried at 110 °c to obtain a final product. The reaction scheme is as follows (2) a calcium salt-potassium iodate metathesis method. A theoretical amount of potassium iodate solution was added to the calcium chloride solution, and the precipitate formed by the reaction was washed with water, dried at room temperature to obtain a hexahydrate, and dried at 110 ° C. To obtain a monohydrate. potassium iodate was added into a reactor containing distilled water by double decomposition method, and calcium nitrate solution was slowly added under stirring to react to generate Calcium iodate and potassium nitrate reaction solution, which was filtered to remove potassium nitrate, adding arsenic removal agent and heavy metal removal agent for solution purification, Filtration, removal of arsenic and heavy metals and other impurities, the filtrate evaporation concentration, cooling crystallization, centrifugal separation, drying, prepared edible Calcium iodate products. Its Ca(NO3)2 · 4H2O 2KIO3 2H2O → Ca(IO3)2 · 6H2O 2KNO3 |
| category | oxidant |
| flammability hazard characteristics | forms an explosive mixture with combustible materials. With aluminum, arsenic, copper, carbon, metal sulfide, organic matter, phosphorus, selenium, sulfur reaction. Thermal decomposition of toxic iodide smoke. |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored separately from the reducing agent |
| fire extinguishing agent | water and sand mist |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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Raw Materials for Calcium iodate