Potassium tartrate 921-53-9

Potassium tartrate has the chemical formula K2C4H4O6. Molecular weight 226.27. Dihydrate is a racemic form, a colorless monoclinic crystal with a relative density of 1.984. It is easily soluble in water and loses its crystalline water to form an anhydrous substance at 100 ℃. Its hemihydrate has a relative density of 1.98 and a refractive index of 1.526 (β). It loses its crystal water at 155 ℃ and decomposes at 200-220 ℃. Very soluble in water, slightly soluble in ethanol.

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Model:
921-53-9
Brand:
futurechemical
Code:
921-53-9

Product Description

Potassium tartrate Basic information
Product Name:	Potassium tartrate
CAS:	921-53-9
MF:	C4H4K2O6
MW:	226.27
EINECS:	213-067-8
Mol File:	921-53-9.mol
Potassium tartrate Chemical Properties
density	1.954 g/mL at 25 °C(lit.)
vapor pressure	0Pa at 25℃
Fp	200-220°C
Decomposition	200-220 ºC
Stability:	Stable.
InChI	InChI=1S/C4H6O6.2K/c5-1(3(7)8)2(6)4(9)10;;/h1-2,5-6H,(H,7,8)(H,9,10);;/q;2*+1/p-2
InChIKey	AVTYONGGKAJVTE-UHFFFAOYSA-L
SMILES	[K+].[K+].C([O-])(=O)C(C(C([O-])=O)O)O
LogP	-1.426 (est)
CAS DataBase Reference	921-53-9(CAS DataBase Reference)
EPA Substance Registry System	Butanedioic acid, 2,3-dihydroxy- (2R,3R)-, dipotassium salt (921-53-9)

Potassium tartrate C₄H₄K₂O₆ Leavening agent 921-53-9 Acidity regulator antioxidant Complexing agent

Quality Assurance

Full-Process Quality Control: From incoming raw material inspection to in-process monitoring and final outgoing checks, every batch is inspected at each production stage against strict acceptance standards.
Third-Party Certified & Tested: Our quality management system is certified to ISO 9001, and products are regularly tested by accredited laboratories (e.g. SGS, TÜV). Test reports are available on request.
100% Batch Traceability: Each batch carries a unique lot number that links raw material records, production parameters, and test results, enabling complete traceability from factory to final delivery.
Pre-Shipment Inspection: Every order passes a final pre-shipment inspection, with inspection photos and reports shared before dispatch.

FAQ From Customers

Q1: What is the minimum order quantity?

A: There is no quantity limit for the first sample or trial order. Just tell us the actual quantity you need.
Q2: How can I confirm that the quality meets the requirements?

A: Provide your specifications, and our technical team will check them or customize them for you; we can provide TDS, MSDS, and COA, and accept third-party testing.
Q3: How do you ensure stable quality?

A: We manufacture under an ISO 9001 quality system, test every batch before release, and retain samples for 24 months for traceability.
Q4: Do you provide samples?

A: Yes — Free samples are available; freight is at buyer's expense for express delivery.