chromicacid(h2cro4),dilithiumsalt
lithium chromate
CAS: 14307-35-8;7789-01-7
Molecular Formula: CrLi2O4
chromicacid(h2cro4),dilithiumsalt - Names and Identifiers
| Name | lithium chromate |
| Synonyms | Lithiumchromat chroman dilitny Lithium chromate lithium chromate Lithium Chromate(Iv) lithium chromium oxide Lithium chromate anhydrous Lithiumchromateminyellowxtl dilithium dioxido(dioxo)chromium chromicacid(h2cro4),dilithiumsalt dilithium dioxido(dioxo)chromium dihydrate |
| CAS | 14307-35-8 7789-01-7 |
| EINECS | 238-244-7 |
| InChI | InChI=1/Cr.2Li.2H2O.4O/h;;;2*1H2;;;;/q;2*+1;;;;;2*-1/rCrO4.2Li.2H2O/c2-1(3,4)5;;;;/h;;;2*1H2/q-2;2*+1; |
chromicacid(h2cro4),dilithiumsalt - Physico-chemical Properties
| Molecular Formula | CrLi2O4 |
| Molar Mass | 129.8757 |
| Density | 1.355 |
| Melting Point | 844℃ |
| Water Solubility | 94.6 g/L at 25 ºC |
| Appearance | crystal |
| Color | yellow |
| Storage Condition | Room Temprature |
| Physical and Chemical Properties | Character yellow or orange-yellow powder. Melting Point: 844 ℃ relative density: 6.12 solubility: soluble in strong acid and strong base solution, insoluble in oil and water. |
| Use | Used as a buffer in air conditioners and as an anti-freeze preservative in water-cooling systems |
chromicacid(h2cro4),dilithiumsalt - Risk and Safety
| Risk Codes | R8 - Contact with combustible material may cause fire R43 - May cause sensitization by skin contact R49 - May cause cancer by inhalation R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S17 - Keep away from combustible material. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S53 - Avoid exposure - obtain special instructions before use. S60 - This material and its container must be disposed of as hazardous waste. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | 1479 |
| Hazard Class | 6.1(b) |
| Packing Group | III |
chromicacid(h2cro4),dilithiumsalt - Upstream Downstream Industry
| Raw Materials | Lithium hydroxide |
chromicacid(h2cro4),dilithiumsalt - Introduction
Decomposition by heating, oxidizing, sealed and preserved, soluble in water, methanol, slightly contained in ethanol and acetone, with a specific gravity of 2.149 (25 ℃). Toxic, water solubility at 25 ℃ is 94.6g/L.
Last Update：2022-10-16 17:13:56
chromicacid(h2cro4),dilithiumsalt - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| overview | molecular formula Li2CrO4, molecular weight 129.87, lithium chromate dihydrate is yellow deliquescent crystalline powder. Lost water is anhydrous at 74.6 ℃. Easily soluble in water. Anhydrous salts can be made in methanol and ethanol. Sealed preservation. Used as reagent, water-cooled atomic reactor as corrosion inhibitor, solution as low temperature heat transfer medium. |
| preparation of lithium bromide solution in lithium bromide refrigeration system | lithium bromide purchased from the market has a solution with a concentration of about 50% or a solid of lithium bromide. If the lithium bromide solution is colorless, a lithium chromate corrosion inhibitor with a weight percentage of about 0.3% needs to be added. Lithium chromate should be dissolved in distilled water before addition, and then added to the lithium bromide solution. The lithium bromide solution added with lithium chromate has better corrosion resistance to metal materials when the pH value is 9.5~10.5. The pH value of lithium bromide solution is determined by pH meter or pH test paper, that is, after the solution is stirred evenly, 2mL is sucked out by a pipette and diluted with 5-10 times distilled water, which can be determined. If the pH value is too small for acidic reaction, an appropriate amount of lithium hydroxide can be added to the solution; if the pH value is too large for alkaline reaction, an appropriate amount of bromohydroacid can be added to the solution. When solid lithium bromide is used to prepare the solution, the required solid lithium bromide and distilled water are weighed respectively, and the solid lithium bromide is gradually added to the distilled water and stirred. The addition of lithium chromate corrosion inhibitor and the adjustment of pH value are the same as above. In the refrigeration system, in order to improve the refrigeration capacity of the lithium bromide unit, the film-like condensation of the refrigerant vapor outside the condenser tube must be changed into bead-like condensation to increase the heat and mass transfer effects of the condenser and absorber. Therefore, 0.1% ~ 0.3% n-octanol or isooctanol is added to the lithium bromide solution in proportion to weight. |
| solubility in water (g/100ml) | dissolved grams per 100ml of water: 142g/20 ℃ |
| use | used as buffer in air conditioner and antifreeze preservative in water cooling system |
| 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 chromicacid(h2cro4),dilithiumsalt