866-84-2
tripotassium citrate anhydrous
CAS: 866-84-2;7778-49-6
Molecular Formula: C6H5K3O7
866-84-2 - Names and Identifiers
866-84-2 - Physico-chemical Properties
| Molecular Formula | C6H5K3O7 |
| Molar Mass | 306.39 |
| Density | 1.187 |
| Melting Point | decomposes at 230℃ [KIR78] |
| Boling Point | 309.6°C at 760 mmHg |
| Flash Point | 155.2°C |
| Water Solubility | 60.91 g/100g saturated solution in water (25°C) [MER06] |
| Solubility | H2O: 1M at20°C, clear, colorless |
| Vapor Presure | 5.73E-05mmHg at 25°C |
| Appearance | White crystalline powder |
| Maximum wavelength(λmax) | ['λ: 260 nm Amax: 0.045', , 'λ: 280 nm Amax: 0.025'] |
| PH | 8.59(1 mM solution);8.9(10 mM solution);9.01(100 mM solution);7.47(1000 mM solution) |
| Storage Condition | Room Temprature |
| Physical and Chemical Properties | density 1.187 |
| Use | Commonly used as analytical reagents, but also used in the pharmaceutical industry; Used in food, pharmaceutical and other industries, as buffers, chelating agents, flavoring agents, stabilizers, antioxidants, emulsifying salts, etc |
866-84-2 - Risk and Safety
| WGK Germany | 1 |
866-84-2 - Upstream Downstream Industry
| Raw Materials | Citric acid Potassium hydroxide Potassium carbonate |
866-84-2 - Standard
Authoritative Data Verified Data
This product is potassium 2-hydroxypropane-1, 2, 3-tricarboxylate monohydrate. The content of C6H5K307 shall not be less than 99.0% calculated as anhydrous.
Last Update：2024-01-02 23:10:35
866-84-2 - Trait
Authoritative Data Verified Data
- This product is white granular crystal or crystalline powder; Odorless; Micro-hygroscopicity.
- This product is soluble in water or glycerol, and almost insoluble in ethanol.
Last Update：2022-01-01 13:39:13
866-84-2 - Differential diagnosis
Authoritative Data Verified Data
This product is potassium salt and citrate identification reaction (General 0301).
Last Update：2022-01-01 13:39:13
866-84-2 - Exam
Authoritative Data Verified Data
pH
take 2.0g of this product, add 25ml of water to dissolve, add 1 drop of Thymol blue indicator solution; If it is blue, add hydrochloric acid titration solution (0.lmol/L) 0.20, the strain is yellow; Add sodium hydroxide titration solution (0.1 mol/L) 0.20, the strain is blue.
chloride
take 0.20g of this product and check it according to law (General rule 0801). Compared with the control solution made of 7.0ml of standard sodium chloride solution, it should not be more concentrated (0.035%).
sulfate
take 0.20g of this product and check it according to law (General rule 0802). Compared with the control solution made of 0.15% of standard potassium sulfate solution, it should not be more concentrated ().
easily carbonized
take 0.50g of this product, add 5ml of sulfuric acid [containing H2S04 94.5% ~ 95.5% (g/g )], heat it in a water bath for 1 hour, and cool it immediately, check according to law (General rule 0842), and compare with the control solution (take 0.5ml of cobalt chloride solution for color comparison and 4.5ml of potassium dichromate solution for color comparison), and shall not be deeper.
oxalate
take l.O g of this product, add lml of water and 3ml of dilute hydrochloric acid to dissolve, add 4 drops of 90% ethanol and 4ml of calcium chloride test solution, and let stand for 1 hour without turbidity.
moisture
take this product about O.lg, precision weighing, add anhydrous methanol 70ml, stir for 5 minutes, according to the determination method of water content (General rule 0832 first method 1), water content should be 4.0% ~ 7.0%.
Heavy metals
take 2.0g of this product, Add 10ml of water to dissolve, add 5ml of dilute hydrochloric acid and an appropriate amount of water to make 25ml, and check according to law (General rule 0821 first law), containing no more than 10 parts per million of heavy metals.
arsenic salt
take l.Og of this product, add 23ml of water to dissolve, add 5ml of hydrochloric acid, check according to law (General rule 0822 first law), should comply with the provisions (0.0002%).
Last Update：2022-01-01 13:39:14
866-84-2 - Content determination
Authoritative Data Verified Data
take this product about 80mg, precision weighing, add glacial acetic acid 20ml and acetic anhydride 2ml, heat to dissolve, let cool, add crystal violet indicator solution 1 drop, with perchloric acid titration solution (0.1 mol/L) titration to a blue color of the solution, and the results of the titration were corrected by a blank test. Each 1 ml of perchloric acid titration solution (0.1 mol/L) corresponds to 10.21mg of C6H5K307.
Last Update：2022-01-01 13:39:15
866-84-2 - Category
Authoritative Data Verified Data
alkaline potassium salt.
Last Update：2022-01-01 13:39:15
866-84-2 - Storage
Authoritative Data Verified Data
sealed storage.
Last Update：2022-01-01 13:39:15
866-84-2 - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| properties | Potassium citrate (Potassium citrate), also known as Potassium citrate, tripotassium citrate. A citrate salt, molecular formula C6H5K3O7, molecular weight 306.39500, it is a white or yellowish crystalline particles or crystalline powder, odorless, salty, cool, deliquescent, soluble in water, almost insoluble in ethanol. The relative density was 1.98. It was melted and decomposed by heating to 230 °c. Purposes: acidity regulator, chelating agent, stabilizer, etc. China's provisions of potassium citrate can be used for all types of food, according to the production needs of appropriate use. Medically, it can be used to control uric acid or cystine from kidney stones, for the prevention and treatment of hypokalemia and alkalinization of urine. |
| Use | is used in the food industry as a buffering agent, chelating agent, stabilizer, antioxidant, emulsifier, flavoring agent, etc. Potassium citrate can also be used for milk and dairy products, jelly, jam, meat, canned hydrogel snacks, cheese emulsification, Citrus Preservation and so on. In the pharmaceutical industry for hypokalemia and potassium deficiency and alkalinizing urine. Potassium citrate product standard (GB 14889-94) index name index 1. Potassium citrate (on a dry basis) ≥ 99.0% 2. Alkalinity 5% aqueous solution is alkaline to litmus, but after adding 0.2 mL of 0.1 mol/L sulfuric acid to 10 mL of the solution, adding a drop of phenolphthalein reagent, no pink appears 3. Arsenic (As) ≤ 0.000 3 % 4. Heavy metal (Pb) ≤ 0.001% 5. Loss on drying (180 ℃,4 h) 3.0 ~ 6.0% as preservatives, stabilizers and pH buffers. China's provisions can be used for all kinds of food, according to the production needs of the appropriate amount of use. used in food, pharmaceutical and other industries, as a buffer, chelating agent, flavoring agent, stabilizer, antioxidant, emulsified salt, etc. commonly used as analytical reagents, also used in the pharmaceutical industry; Used in food, pharmaceutical and other industries, as buffer, chelating agent, flavoring agent, stabilizer, antioxidant, emulsifying salt, etc. |
| Usage | Usage: 1. For jam, jelly to adjust the acidity, in order to maintain its pH at 2.8~3.5 as well. The specific dosage varies according to different foods, which is 0.5~5g/kg. 2. As a stabilizer, for condensed milk, sweetened milk, cream, 2g/kg (used alone) or 3G/kg (combined with other stabilizers, anhydrous); For milk powder, dehydrated cream, 5g/kg (alone or in combination with other stabilizers, as anhydrous); For processed cheese, 40g/kg (alone or in combination with other stabilizers, as anhydrous). Dosage: according to the production needs for all kinds of food, jam, jelly 0.5~5g/kg, condensed milk, sweet condensed milk, cream 2~3g/kg, milk powder, dehydrated Cream 5g/kg, cheese 40g/kg. |
| drug for prevention of urinary calculi | potassium citrate is the most commonly used drug for prevention of urinary calculi, the study found that the acid base value and citric acid value in the urine and the formation of urinary calculi have a very close relationship. In acidic urine (pH<5.5), the solubility of uric acid is very low, which is easy to cause uric acid stones. In alkaline urine (pH>7), it is easy to form calcium phosphate or magnesium phosphate stones. 63% of patients with urinary tract stones in the urine of citric acid is lower than normal, and potassium citrate can provide a large amount of citric acid to raise the urine pH value, so for uric acid stones, low calcium citrate stone disease and renal tubular Stone caused by calcium stones have a very significant therapeutic effect. However, this results in an increase in potassium ions and a decrease in Ammonia ions in the urine, because potassium citrate is supplemented with not only citric acid but also potassium. Because the metabolism of potassium in the body is very fast, there is no change in the potassium content in the blood, so it has little effect on the body. From uric acid stones in patients with daily total urine volume, oxalic acid, phosphate, sodium, magnesium, sulfate and uric acid and other aspects of the test found that, also does not take potassium citrate. |
| production method | a product obtained by neutralization of citric acid with potassium hydroxide or potassium bicarbonate. See sodium citrate C6H8O7 3KHCO3 → CaH5K3O7 · H2O 3CO2 δ2h2o |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 02:00:12
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Product Name: Potassium Citrate Request for quotation
CAS: 866-84-2
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CAS: 866-84-2
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Product Name: tripotassium citrate anhydrous Request for quotationCAS: 7778-49-6
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