Molecular Formula | C4H6O6 |
Molar Mass | 150.09 |
Density | 1.788 |
Melting Point | 210-212°C(lit.) |
Boling Point | 191.59°C (rough estimate) |
Specific Rotation(α) | [α]D20 -0.2~+0.2° (c=20, H2O) |
Flash Point | 210 °C |
JECFA Number | 621 |
Water Solubility | soluble |
Solubility | Soluble in water, ethanol, ether, insoluble in chloroform. |
Appearance | White crystal |
Color | White |
Merck | 14,9069 |
BRN | 1725148 |
pKa | 3.03, 4.37(at 25℃) |
PH | 3.19(1 mM solution);2.58(10 mM solution);2.03(100 mM solution); |
Storage Condition | Store below +30°C. |
Stability | Stable. Incompatible with bases, oxidizing agents, reducing agents, silver. |
Sensitive | Easily absorbing moisture |
Refractive Index | 1.5860 (estimate) |
MDL | MFCD00071626 |
Physical and Chemical Properties | Colorless crystals or white crystalline powder, odorless, sour taste. It is a mixture of equal amounts of dextrorotatory and levorotatory tartaric acid, often containing one or two crystals of water, which is lost when heated to 100°C. Stable in air, density 1.697, its solubility in water 20.6(20°C), ether solubility of about 1%, ethanol solubility of 5.01(25°C). |
Use | Widely used in food, medicine, chemical, light industry and other industries. For example, as a beer foaming agent, food acidulant, flavoring agent, used for cool drinks, candy, fruit juice, sauce, cold dishes, baking powder, etc., its sour taste is 1.3 times that of citric acid, especially suitable for the acidulant of grape juice. In tanning, photography, glass, enamel, telecommunications equipment and other industries also have a very important role. |
Hazard Symbols | Xi - Irritant |
Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R41 - Risk of serious damage to eyes |
Safety Description | 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. |
WGK Germany | 3 |
TSCA | Yes |
HS Code | 29181200 |
Reference Show more | 1. Yang Xinyue, Yang Yuchi, Zhou Xiujuan, Xue Guixin. Optimization of Fermentation Conditions of Citrus Fruit Vinegar and Its Composition Analysis [J]. Chinese condiment, 2020,45(10):75-79. 2. [IF = 7.514] Hongcai Li et al."Study on the nutritional characteristics and antioxidant activity of dealcoholized sequentially fermented apple juice with Saccharomyces cerevisiae and Lactobacillus plantarum fermentation." Food Chem. 2021 Nov;363:130351 3. [IF = 6.429] Limei Wang et al."Changes in cell wall metabolism and flavor qualities of mushrooms (Agaricus bernardii) under EMAP treatments during storage." Food Packaging Shelf. 2021 Sep;29:100732 4. [IF = 5.64] Li Jie et al."Investigation of the Lactic Acid Bacteria in Kazak Cheese and Their Contributions to Cheese Fermentation." Front Microbiol. 2020 Mar;0:228 5. [IF = 4.556] Dandan Zhao et al."Physico-chemical properties and free amino acids profiles of six wolfberry cultivars in Zhongning." J Food Compos Anal. 2020 May;88:103460 6. [IF = 3.638] Nan Sun et al."Assessment of chemical constitution and aroma properties of kiwi wines obtained from pure and mixed fermentation with Wickerhamomyces anomalus and Saccharomyces cerevisiae." J Sci Food Agr. 2022 Jan;102(1):175-184 |
There are two asymmetric carbon atoms in the tartaric acid molecule, and there are four isomers, namely dextrorotatory, levorotatory, racemic and meso-tartaric acid. Industrial production is the largest racemic tartaric acid, colorless crystals, melting point of 206 ℃,210 ℃ decomposition, relative density of 1. 788. Soluble in water and ethanol, slightly soluble in ether, insoluble in benzene.
This product is 2, 3-dihydroxybutanedioic acid. Calculated as dried product, the content of C4Hs0 6 shall not be less than 99.5%.
It is mainly used as a food acidulant, and its salts are used for mirror silver plating and Metal Treatment. In the textile industry, tartaric acid is used as a mordant to control the release of chlorine from bleaching powder. It is used in medicine to make sincofen. In addition, tartaric acid can also be used in the leather and telecommunications equipment industry.
take this product l .O g, Add 10ml of water to dissolve, check according to law (General rule 0901 and general rule 0921), the solution should be clear and colorless; If the color is colored, compare with the yellow No. 2 Standard Colorimetric solution (General rule 0901, first method), not deeper.
take this product, precision weighing, adding water to dissolve and quantitatively dilute to make about O per lm l. lg solution, determined according to law (General rule 0621), specific rotation should be a 0. 10. To +0.10.
take 0.5g of this product and check it according to law (General rule 0801). Compared with the control solution made of 5.0 ml of standard sodium chloride solution, it should not be more concentrated (0. 01%).
take this product 2.0g, check according to law (General rule 0802), compared with the standard potassium sulfate solution 3. Oml made of the control solution, not more concentrated (0. 015%).
take 0.8g of this product, add 4M l of water to dissolve, add 3ml of hydrochloric acid and l g of zinc, boil for 1 minute, place for 2 minutes, add 1% phenylhydrazine hydrochloride solution 0 .2 5 m l, heated to boiling, rapid cooling, transfer the solution to the Nessler colorimetric tube, add equal volume of hydrochloric acid and 5% potassium ferricyanide solution 0 .2.5 m l, shake well, place for 30 minutes, and then take oxalic acid (C2 H20 4 • 2H20) with standard oxalic acid solution. O m g, diluted with water to 1 0 0m l, shake well, each lm l containing (: 24 70 tons of 2) 4. Compared with the control solution made by the same method, the red color produced by 0M l should not be deeper (0. 035%).
take this product 1. Og, add water 2 5M l and sulfuric acid solution (1 -20) 2 5M l to dissolve, keep the solution at 20°C ± l t: condition, add 0. 02mo l/L potassium permanganate solution 4. O m l, the purple color of the solution should not disappear within 3 minutes under static conditions.
take this product, dry to constant weight at 105°C, and lose no more than 0. 5% of weight (General rule 0831).
The l .O g of this product shall be taken for inspection according to law (General rule 0841), and the remaining residue shall not exceed.
10ml of water was added to dissolve l .O g of this product, and 20ml of 5% sodium acetate solution was added. Take alcohol to prepare standard calcium solution (precision weighing calcium carbonate 2.50g, put in 1000ml measuring flask, add 5ml o l/L acetic acid solution 12ml, add appropriate amount of water to dissolve and dilute to the scale, shake, as calcium stock solution. Immediately before use, take 10ml of calcium stock solution, put it in a 100ml measuring flask, dilute it to the scale with ethanol, and shake well. Ca0.lmg per lm l) 0 .2 m l, put in Nessler's colorimetric tube, add 4% ammonium oxalate solution lm l, 1 min later, add 2 m p l/L acetic acid solution lm l and 15ml of test solution, shake well, place it for 15 minutes, mix it with standard calcium solution (before use, accurately measure the calcium stock solution lm l, put it in a 100ml measuring flask, dilute it to the scale with water, and shake well,
Ca 10W per lm l) 10. O m l, add 2 mmol/L acetic acid solution lm l and water 5m l made in the same method of control solution, should not be more concentrated (0.02%).
The residue left under the item of taking the ignition residue shall not contain more than 10 parts per million of heavy metal when examined by law (General Principles 0821, Law II).
take this product l .O g, add water 23ml and hydrochloric acid 5M l to dissolve, check according to law (General rule 0822 first law), should comply with the provisions (0.0002%).
take about 0.6 5 g of this product, weigh it accurately, add 2 5 m l of water to dissolve, add several drops of phenolphthalein indicator solution, and titrate with sodium hydroxide titration solution (lm o l/L). Each l m l sodium hydroxide titration solution (lm o l/L) corresponds to 75. 0 4 m g of C4H60 6.
pharmaceutical excipients, p H value regulator and effervescent agent.
light shielding and sealed storage.