DL-Tartaric acid
CAS Number: 133-37-9
Appearance: White Liquid
Molecular Formula: C4H6O6
Molecular weight: 150.09
Sample: Available
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
DL-Tartaric acid is a colorless crystalline solid that dissolves in water and alcohol, featuring a typical sour taste with a melting point of about 170°C (338°F). Naturally occurring tartaric acid usually exists in L-configuration based on the absolute structure of D-glyceric acid. L-tartrate solutions are dextrorotatory, so they are named L(+)-tartrates. It is also called dihydroxy succinic acid. DL-Tartaric acid is widely used as a chemical intermediate and sequestrant, and applied in tanning, effervescent drinks, baking powders, ceramics, photography, textiles, mirror silvering, and metal coloring.
Parameters
| Item | Value |
| Melting point | 210-212 °C(lit.) |
| Boiling point | 191.59°C (rough estimate) |
| alpha | [α]D20 -0.2～+0.2° (c=20, H2O) |
| density | 1.788 |
| vapor pressure | <0.1 hPa (20 °C) |
| FEMA | 3044 | TARTARIC ACID (D-, L-, DL-, MESO-) |
| refractive index | 1.5860 (estimate) |
| Fp | 210 °C |
| storage temp. | Store below +30°C. |
| solubility | H2O: 0.1 g/mL, clear |
| form | Liquid |
| pka | 3.03, 4.37(at 25℃) |
| color | White |
| PH | 3.19(1 mM solution);2.58(10 mM solution);2.03(100 mM solution); |
| Odor | at 100.00 %. very mild caramellic |
| Odor Type | odorless |
| biological source | synthetic |
| Water Solubility | soluble |
| Merck | 14,9069 |
| JECFA Number | 621 |
| BRN | 1725148 |
| Dielectric constant | 35.9（-10℃） |
| Stability: | Stable. Incompatible with bases, oxidizing agents, reducing agents, silver. |
| Cosmetics Ingredients Functions | BUFFERING FRAGRANCE |
| InChIKey | FEWJPZIEWOKRBE-UHFFFAOYSA-N |
| LogP | -1.43 |
| CAS DataBase Reference | 133-37-9(CAS DataBase Reference) |
| NIST Chemistry Reference | Tartaric acid(133-37-9) |
| EPA Substance Registry System | Butanedioic acid, 2,3-dihydroxy-, (2R,3R)-rel- (133-37-9) |
Safety Information
| Item | Value |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38-41 |
| Safety Statements | 26-37/39-36 |
| WGK Germany | 3 |
| Autoignition Temperature | 425 °C |
| TSCA | TSCA listed |
| HS Code | 29181200 |
Product Application
DL-Tartaric acid acts as an antioxidant synergist, emulsifier, sequestrant, and flavor enhancer. It is often blended with citric acid to make effervescent salts to improve the flavor of oral medicines. It is also used in pigments, processing aids, inks, toners, and colorants. It serves as a chelator in metal and agricultural industries. In addition, it functions as a lubricant and grease. When mixed with sodium bicarbonate, it works as a leavening agent in food production. In pharmaceuticals, it is used to synthesize tartar emetic, an expectorant in cough syrups.
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