GLUCONIC ACID

PRODUCT IDENTIFICATION
CAS NO. 526-95-4

GLUCONIC ACID
EINECS NO. 208-401-4
FORMULA CH2(OH)(CHOH)4COOH
MOL WT. 196.16

H.S. CODE

 2918.16
TOXICITY Oral rat LD50: > 90 ml/kg
SYNONYMS D-Gluconic acid;
2,3,4,5,6-Pentahydroxyhexanoic acid;
DERIVATION

 

CLASSIFICATION

 GLUCONATES /

PHYSICAL AND CHEMICAL PROPERTIES (50% AQ. SOLUTION)
PHYSICAL STATE clear to brown liquid
MELTING POINT < 12 C
BOILING POINT > 100 c
SPECIFIC GRAVITY 1.24 - 1.26
SOLUBILITY IN WATER soluble
pH  
VAPOR DENSITY  

AUTOIGNITION

 

NFPA RATINGS

 Health: 1; Flammability: 0; Reactivity: 0

REFRACTIVE INDEX

  
FLASH POINT  
STABILITY Stable under ordinary conditions.

APPLICATIONS
Gluconic acid is a polyhydroxycarboxylic acid with six carbon length. It is derived from glucose by oxidation of the aldehyde group on the C-1 to a carboxyl group. It is abundant in plants, fruits and other foodstuffs. Commercially the physiological d-form gluconic acid is prepared by fermentation process. It has a carboxylic group and five hydroxy groups, and thus is a good chelator particularly in alkaline conditions. Chelation is a chemical combination with a metal in complexes in which the metal is part of a ring. Organic ligand is called  chelator or chelating agent, the chelate is a metal complex. The larger number of ring closures to a metal atom is the more stable the compound. Chelation is applied in metal complex chemistry, organic and inorganic chemistry, biochemistry, and environment protection. It is used in chemotherapeutic treatments for metal poisoning. Chelating agents offers a wide range of sequestrants to control metal ions in aqueous systems. By forming stable water soluble complexes with multivalent metal ions,  chelating agents prevent undesired interaction by blocking normal reactivity of metal ions. Heavy metals are chelated in alkaline solution and their interferences are eliminated gluconic acid. Concentrated gluconic acid solution contains certain lactone structure, a neutral cyclic ester, showing antiseptic property. Gluconic acid and its derivatives (salts or esters) are used in the formulation of pharmaceuticals, foods, and cosmetics as mineral supplements to prevent the deficiency and as buffer salts. They are used as ingredients in various hygienic products. In industrial applications, they are used for scale removal in metal cleanings, industrial and household cleaning compounds including mouth washer, metal finishing, water treatments, and as paper and textile auxiliaries.
SALES SPECIFICATION (50% AQ. SOLUTION)

APPEARANCE

 clear to brown liquid

CONTENT

50.0% min
MELTING POINT apprx 12 C
SPECIFIC GRAVITY 1.24 - 1.26
Reducing substances

8.0% max

TRANSPORTATION
PACKING  
HAZARD CLASS Not regulated
UN NO.  
OTHER INFORMATION
Hazard Symbols: XI, Risk Phrases: 36/37/38. Safety Phrases: 26-28A-37-37/39-45