Potassium tartrate dibasic hemihydrate
Potassium tartrate dibasic hemihydrate (CAS 6100-19-2) is a potassium salt of tartaric acid, presenting as a hydrated crystalline solid with the linear formula KOOC(CHOH)2COOK · 0.5H2O and a molecular weight of 235.28. Supplied by Tech Serve Solutions with an assay of ≥99.0%, this compound is primarily utilised in chemical synthesis and as a chiral building block. Its properties make it a valuable reagent in various organic chemistry applications.
- IUPAC
- L-(+)-Tartaric acid dipotassium salt,Dipotassium tartrate hemihydrate
- Synonyms
- L-(+)-Tartaric acid dipotassium salt, Dipotassium tartrate hemihydrate

Asymmetric Synthesis
Utilised as a chiral building block or auxiliary in stereoselective organic synthesis, enabling the formation of specific enantiomers.
Chemical Synthesis Reagent
Serves as a versatile reagent and precursor in the development of complex organic molecules and fine chemicals.
Organic Building Block
Acts as a fundamental component in the construction of diverse organic structures, facilitating further chemical transformations.
Carboxylic Acid Salt Applications
Employed in applications where a dipotassium salt of tartaric acid is required, potentially in buffering or as a reactant.
| Molecular weight | 235.28 |
|---|---|
| Linear formula | KOOC(CHOH)2COOK · 0.5H2O |
| Assay | ≥99.0% |
| pH | 7-9 (20 °C, 0.1%) |
| Loss on drying | ≤4% loss on drying, 150 °C, 4 h |
| Impurities tested | ≤0.001% ammonium (NH4)≤0.001% heavy metals (as Pb) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Cation traces | As: ≤3 mg/kgCa: ≤100 mg/kgCu: ≤10 mg/kgFe: ≤20 mg/kgHg: ≤1 mg/kgPb: ≤5 mg/kgZn: ≤10 mg/kg |
| Anion traces | chloride (Cl-): ≤500 mg/kgoxalate (as oxalic acid): ≤100 mg/kgsulfate (SO42-): ≤1000 mg/kg |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Potassium tartrate dibasic hemihydrate used for?
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Potassium tartrate dibasic hemihydrate is primarily used in asymmetric synthesis, as a chiral building block, in general chemical synthesis, and as a carboxylic acid salt.
What are the CAS number and formula for Potassium tartrate dibasic hemihydrate?
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The CAS number is 6100-19-2 and the linear formula is KOOC(CHOH)2COOK · 0.5H2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Potassium tartrate dibasic hemihydrate with a purity of ≥99.0%. This is a research or technical grade; TSS does not represent it as USP, BP, EP, or other pharmacopoeial grades.
How should Potassium tartrate dibasic hemihydrate be handled?
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Appropriate personal protective equipment, including eyeshields and gloves, should be worn. In dusty environments, a P1 (EN143) or N95 (US) respirator filter is recommended. The material has a WGK rating of 3, indicating it is hazardous to water.
Is Potassium tartrate dibasic hemihydrate suitable for export?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including Potassium tartrate dibasic hemihydrate, and can arrange international shipment.
How can I request a sample or quote for Potassium tartrate dibasic hemihydrate?
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Please contact the Tech Serve Solutions sales team through the website or by phone to request a sample or a detailed quotation.
Does this product contain any significant impurities?
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Key impurities are strictly controlled: ammonium (NH4) ≤0.001%, heavy metals (as Pb) ≤0.001%, chloride (Cl-) ≤500 mg/kg, oxalate (as oxalic acid) ≤100 mg/kg, and sulfate (SO42-) ≤1000 mg/kg. It also has limits on various cation traces including As, Ca, Cu, Fe, Hg, Pb, and Zn.
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