Sodium tartrate dihydrate
CAS 6106-24-7
EC 612-074-7
Formula C4H6O6.2H2O.2Na
MW 230.08 g/mol
Salts & Minerals Food & NutritionPersonal Care & CosmeticsPharmaceuticals & Healthcare pH Regulation & BufferingAntioxidant & Stabilizer
Description
Sodium tartrate dihydrate (CAS 6106-24-7) is the disodium salt of L-tartaric acid, supplied as a white crystalline powder under common trade names including Disodium tartrate dihydrate and sodium L-tartrate dihydrate. It carries no assigned E-number and is distinct from potassium sodium tartrate (Rochelle salt).
In food and pharmaceutical manufacturing, sodium tartrate dihydrate functions as a pH buffer by resisting acidic or alkaline shifts in aqueous systems, maintaining process stability across a defined pH range. In personal care formulations, it acts as a skin conditioner and protectant, and serves as a heat stabilizer in select polymer processing applications.
The product is available in technical and food-grade forms, with compliance supported under FCC and Ph.Eur. monographs where applicable. It falls under REACH registration requirements within the EU (EC 612-074-7, HS code 29181300) and is typically supplied in 25 kg bags or fiber drums.
In food and pharmaceutical manufacturing, sodium tartrate dihydrate functions as a pH buffer by resisting acidic or alkaline shifts in aqueous systems, maintaining process stability across a defined pH range. In personal care formulations, it acts as a skin conditioner and protectant, and serves as a heat stabilizer in select polymer processing applications.
The product is available in technical and food-grade forms, with compliance supported under FCC and Ph.Eur. monographs where applicable. It falls under REACH registration requirements within the EU (EC 612-074-7, HS code 29181300) and is typically supplied in 25 kg bags or fiber drums.
Physical Properties
| Melting Point | 150°C -2H₂O |
| Density | 1,82 g/cm 3 |
| Appearance | white crystalline powder |
| Color | White or colorless |
| Form | Powder/Solid |
| Water Solubility | 290 g/L (20 ºC) |
| pH | 7.0-9.0 (25℃, 0.1M in H2O) |
Trade & Regulatory
| HS Code | 29181300 |
| WGK (Germany) | 3 |
Other Names
sodium L-tartrate dihydrateSODIUM (+)-TARTRATEHYDRANAL(R)-STANDARDDisodium tartrate dihydrateDisodium tartarate dihydrateDI-SODIUM TARTRATE DIHYDRATEDISODIUM L-TARTRATE DIHYDRATESODIUM L-(+)-TARTRATE DIHYDRATE
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Raw Materials
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