Sodium Tartrate Dihydrate is the disodium salt of tartaric acid with the molecular formula C₄H₄Na₂O₆·2H₂O. It is also known as disodium tartrate dihydrate or L-(+)-tartaric acid disodium salt. It occurs as a white crystalline solid and is soluble in water. Its crystal structure incorporates two water molecules in a defined proportion which gives the compound a consistent water content. This precisely known water content makes the compound particularly important as a primary reference standard for Karl Fischer titration, including the standardization of volumetric titrants used for water determination. Its buffering behavior also helps control pH conditions in biochemical and laboratory systems.
CAS No.: 6106-24-7
Synonyms: Disodium tartrate dihydrate, sodium tartrate dibasic dihydrate, tartaric acid sodium salt dihydrate.
| Physical Properties | |
| Chemical formula | C4H8Na2O8 |
| IUPAC Name | disodium;(2R,3R)-2,3-dihydroxybutanedioate;dihydrate |
| Molecular weight | 230.08 g/mol |
| Solubility | Soluble in water |
| Density | 1.82 g/cm3 |
| Appearance | White crystalline powder |
| Storage | Store at room temperature |
| Chemical Properties | |
| Color | White |
| Physical State | Solid |
| Melting Point | 120°C |
| Ph | 8 (25 °C, 50 g/L in H2O) |
| Odor | Slight tartaric odor |
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| Pictograms : | No Information Available. |
| Hazard Statements : | No Information Available. |
| Precautionary Statements: | No Information Available. |
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Sodium Tartrate Dihydrate is the disodium salt of tartaric acid with the molecular formula C₄H₄Na₂O₆·2H₂O. It is also known as disodium tartrate dihydrate or L-(+)-tartaric acid disodium salt. It occurs as a white crystalline solid and is soluble in water. Its crystal structure incorporates two water molecules in a defined proportion which gives the compound a consistent water content. This precisely known water content makes the compound particularly important as a primary reference standard for Karl Fischer titration, including the standardization of volumetric titrants used for water determination. Its buffering behavior also helps control pH conditions in biochemical and laboratory systems.
CAS No.: 6106-24-7
Synonyms: Disodium tartrate dihydrate, sodium tartrate dibasic dihydrate, tartaric acid sodium salt dihydrate.
| Physical Properties | |
| Chemical formula | C4H8Na2O8 |
| IUPAC Name | disodium;(2R,3R)-2,3-dihydroxybutanedioate;dihydrate |
| Molecular weight | 230.08 g/mol |
| Solubility | Soluble in water |
| Density | 1.82 g/cm3 |
| Appearance | White crystalline powder |
| Storage | Store at room temperature |
| Chemical Properties | |
| Color | White |
| Physical State | Solid |
| Melting Point | 120°C |
| Ph | 8 (25 °C, 50 g/L in H2O) |
| Odor | Slight tartaric odor |
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| Pictograms : | No Information Available. |
| Hazard Statements : | No Information Available. |
| Precautionary Statements: | No Information Available. |
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Sodium tartrate dihydrate is used as an accurate water-content standard in Karl Fischer titration, a pH-stabilizing buffer in laboratory and medical formulations and an emulsifying and binding agent in foods such as jellies and sausage casings.
It is also known as disodium tartrate dihydrate, L-(+)-tartaric acid disodium salt dihydrate, or Sal tartar. The chemical formula is C₄H₄Na₂O₆·2H₂O. The dihydrate indicates that each formula unit contains two water molecules.
Sodium tartrate dihydrate is soluble in water, which allows it to be readily incorporated into aqueous laboratory and buffer solutions.
