酒石酸一钾一钠四水合物

Description

Monopotassium monosodium tartrate tetrahydrate · CAS 6381-59-5 · C4.H4.K.Na.O6. UNII P49F8NV7ES. Boiling Point: 200 °C; Boiling Point: 200 °C @760 [mm Hg]; Melting Point: 70-80 °C.

Identification

CAS Registry Number	6381-59-5
PubChem CID	9357
Molecular formula	C4.H4.K.Na.O6
IUPAC name	potassium;sodium;(2R,3R)-2,3-dihydroxybutanedioate
UNII (FDA)	P49F8NV7ES

Computed Descriptors

Molecular Weight	210.16
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	6
Rotatable Bond Count	1
Exact Mass	209.95426361
Monoisotopic Mass	209.95426361
Topological Polar Surface Area	121
Heavy Atom Count	12
Formal Charge	0
Complexity	123

Physical & Chemical Properties

Boiling Point	200 °C
Boiling Point	200 °C @760 [mm Hg]
Melting Point	70-80 °C
Melting Point	90-100 °C
Density	1.77 @25 °C
Stability/Shelf Life	Unstable above 225 °C

Physical description & handling notes

• Dry Powder; Liquid
• Colourless crystals or white crystalline powder
• Colorless solid; [HSDB] Colorless crystals or white crystalline powder; Odorless; Slightly efflorescent; [MSDSonline]
• COLORLESS CRYSTALS
• CRYSTALS ARE OFTEN COATED WITH WHITE POWDER
• Cool, saline taste

Regulatory Status

Regulatory & Food Contact	FDA Substance added to food: EMULSIFIER OR EMULSIFIER SALT, PH CONTROL AGENT, SEQUESTRANT SEQUESTRANT; STABILIZER: Food Additives JECFA ADI: 0-30 mg/kg bw Expressed as L(+)-tartaric acid NMRS 53/TRS 539-JECFA 17/24 FAS 5/NMRS 53A-JECFA 17/512
GHS notification summary	99.6% (234 / 235)

GHS Hazard Classification

GHS notification summary	99.6% (234 / 235)

Documented Uses

• Used as sequestrant and general purpose food additive; Used in mirror production, Fehling's solution, crystal-controlled oscillators, and as saline cathartic; [HSDB]
• SEQUESTRANT & GENERAL PURPOSE FOOD ADDITIVE.
• FOOD CHEMICAL: EMULSIFIER IN CHEESE, BUFFER IN CONFECTIONS, IN FRUIT JELLY, PRESERVES & JAMS; AS SALINE CATHARTIC; IN MFR OF MIRRORS; CONSTITUENT OF FEHLING'S SOLUTION; IN CRYSTAL-CONTROLLED ELECTRONIC OSCILLATORS.
• Baking powders; silvering mirrors
• Food Additives -> SEQUESTRANT; STABILIZER -> JECFA Functional Classes
• Processing aids not otherwise specified

Synonyms

Rochelle salt; Seignette salt; SODIUM POTASSIUM TARTRATE; 304-59-6; Monopotassium monosodium tartrate; Sodium potassium L-tartrate; Potassium sodium L(+)-tartrate; Potassium sodium tartrate anhydrous; P49F8NV7ES; Tartaric acid, monopotassium monosodium salt; 2,3-Dihydroxybutanedioic acid, monopotassium monosodium salt; Butanedioic acid, 2,3-dihydroxy-, monopotassium monosodium salt; CHEBI:63019; DTXSID90889341; INS NO.337; Potassium sodium dextro-tartrate

Frequently Asked Questions

What are the CAS number and molecular formula of Monopotassium monosodium tartrate tetrahydrate?

CAS 6381-59-5; molecular formula C4.H4.K.Na.O6; molecular weight — g/mol.

What other names is Monopotassium monosodium tartrate tetrahydrate known by?

Rochelle salt, Seignette salt, SODIUM POTASSIUM TARTRATE, 304-59-6, Monopotassium monosodium tartrate, Sodium potassium L-tartrate.

What is the regulatory status of Monopotassium monosodium tartrate tetrahydrate?

Documented regulatory listings: FDA Substance added to food: EMULSIFIER OR EMULSIFIER SALT, PH CONTROL AGENT, SEQUESTRANT; SEQUESTRANT; STABILIZER: Food Additives; JECFA ADI: 0-30 mg/kg bw.

Is Monopotassium monosodium tartrate tetrahydrate classified as hazardous?

99.6% of GHS notifications report no hazard classification (234 of 235).

What are the key physical properties of Monopotassium monosodium tartrate tetrahydrate?

Boiling Point: 200 °C; Boiling Point: 200 °C @760 [mm Hg]; Melting Point: 70-80 °C; Melting Point: 90-100 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.