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90-80-2

90-80-2 Structure

90-80-2 Structure
IdentificationMore
[Name]

delta-Gluconolactone
[CAS]

90-80-2
[Synonyms]

1,2,3,4,5-PENTAHYDROXYCAPROIC ACID DELTA-LACTONE
D(+)-DEXTRONIC ACID DELTA-LACTONE
DELTA-GLUCONOLACTONE
DELTA-GLUCURONOLACTONE
D(+)-GLUCONIC ACID DELTA-LACTONE
D-GLUCONIC ACID DELTA-LACTONE
D-GLUCONIC ACID-D-LACTONE
D-GLUCONIC ACID LACTONE
D-GLUCONLACTONE
D-(+)-GLUCONO-1,5-LACTONE
D-GLUCONO-1,5-LACTONE
D-(+)-GLUCONO-DELTA-LACTONE
D-GLUCONO DELTA-LACTONE
D-GLUCONO-D-LACTONE
GDL
GLUCONIC ACID, ANHYDRIDE
GLUCONIC ACID DELTA-LACTONE
GLUCONIC ACID D-LACTONE, D-(+)-
GLUCONIC ANHYDRIDE
GLUCONIC-D-LACTONE
[EINECS(EC#)]

202-016-5
[Molecular Formula]

C6H10O6
[MDL Number]

MFCD00006647
[Molecular Weight]

178.14
[MOL File]

90-80-2.mol
Chemical PropertiesBack Directory
[Appearance]

Powder
[Melting point ]

160 °C (dec.)(lit.)
[mp ]

160 °C (dec.)(lit.)
[Boiling point ]

230.35°C (rough estimate)
[alpha ]

65 º (c=1,H2O)
[density ]

0.6
[refractive index ]

63.5 ° (C=10, H2O)
[storage temp. ]

Sealed in dry,Room Temperature
[solubility ]

590g/l Hydrolysis
[form ]

Crystalline Powder
[pka]

12.06±0.60(Predicted)
[color ]

White to off-white
[PH]

3.6 (10g/l, H2O, 20℃)
[Water Solubility ]

500 g/L (20 ºC)
[Usage]

Geogard(R)Ultra is a synergistic blend of gluconolactone and sodium benzoate. This blend provides broad spectrum protection against product spoilage in a variety of personal care formulations. Product Data Sheet
[Merck ]

14,4457
[BRN ]

83286
[Uses]

gluconolactone is used in cosmetics for its anti-acne properties. It can also help improve skin hydration given its water-binding ability. In addition, formulators may select gluconolactone for its action as a product stabilizer (chelating agent). Some studies indicate potential free-radical scavenging capacities as well. These properties would make it particularly relevant for use in making anti-aging, moisturizing, and possibly sun care products.
[Uses]

(GDL) An acidulant. It hydrolyzes to form gluconic acid in water solution and thereby creates the desired pH. The rate of acid formation is affected by temperature, concentration, and the pH of the solution. It has low acid release at room temperature and accelerated conversion into gluconic acid at high temperatures. It is readily soluble with a solubility of 59 g in 100 ml of water at 20°C. It functions as a leavening agent, acidulant, curing and pickling agent, and pH control agent. It is comparatively less tart/sour than other food acids. It is used in baked goods, fish products, desserts, and dressings.
[CAS DataBase Reference]

90-80-2(CAS DataBase Reference)
[NIST Chemistry Reference]

D-Gluconic acid, «delta»-lactone(90-80-2)
[EPA Substance Registry System]

90-80-2(EPA Substance)
Safety DataBack Directory
[Hazard Codes ]

Xn,Xi
[Risk Statements ]

R21:Harmful in contact with skin.
R36/38:Irritating to eyes and skin .
R62:Possible risk of impaired fertility.
R63:Possible risk of harm to the unborn child.
[Safety Statements ]

S24/25:Avoid contact with skin and eyes .
S53:Avoid exposure-obtain special instruction before use .
S36/37:Wear suitable protective clothing and gloves .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S25:Avoid contact with eyes .
[WGK Germany ]

3
[RTECS ]

LZ5184000
[F ]

21
[TSCA ]

Yes
[HS Code ]

38220090
[Safety Profile]

Mutation data reported. When heated to decomposition it emits acrid smoke and irritating fumes.
[Hazardous Substances Data]

90-80-2(Hazardous Substances Data)
Raw materials And Preparation ProductsBack Directory
【Raw materials】

Sodium hydroxide-->Hydrochloric acid-->Sulfuric acid-->D(+)-Glucose-->Potassium Phosphate Monobasic-->Barium hydroxide-->Ammonium phosphate dibasic-->Calcium gluconate-->AMBERLITE(R) IRC-50-->Gluconic acid-->Glucose oxidase-->CATALASE
【Preparation Products】

Antistaling agent-->Manganese gluconate-->Potassium gluconate-->1-chloro-4-(β-D-glucopyranos-1-yl)-2-[4-((S)-tetrahydrofuran-3-yloxy)benzyl]benzene-->D-Gluconic acid, .gamma.-lactone-->EGT1442
Material Safety Data Sheet(MSDS)Back Directory
[msds information]

D-Aldonolactone(90-80-2).msds
Questions And AnswerBack Directory
[Description]

Delta-Gluconolactone (GDL) is a lactone of the D-gluconate. It is a natural constituent of many foods. It can be found in honey, fruit juices, wine and many-fermented products1-3. It is used as a food additive with the E number E575 used as a sequestrant, an acidifier (it lower the pH and also help preserve the food from deterioration by enzymes and organisms), or a curing, pickling, or leavening agent. GDL has been marketed for use in feta cheese. GDL is neutral, but hydrolyses in water to gluconic acid that is acidic, adding a tangy taste to foods, though it has roughly a third of the sourness of citric acid. It can be used as nutritional supplement in beverage such as in Instant Drinks, Syrups, RTD Tea and Coffee, Sports and Energy Drinks, Waters.
Hazard InformationBack Directory
[Chemical Properties]

Powder
[Purification Methods]

Crystallise Dglucono-lactone from ethylene glycol monomethyl ether and dry for 1hour at 110o. It can be freed from other sugars via a column of Celite and charcoal (750g of each, 90 x 7.5cm) which is washed with 0.01N formic acid until the pH of the wash is equal to that of the entering acid. The lactone is applied in H2O and eluted with 0.01N formic acid (7L), then eluted with 7.5% EtOH/0.01N formic acid (8L), then 15% EtOH/0.01N formic acid (8L) which removes pentose and isomaltose (the optical rotation of the eluates are used for sugar detection) and finally elution with aqueous formic acid provides glucolactone which is obtained by evaporating or freeze drying. Its solubility in H2O is 60% and 1% in EtOH. A solution in H2O is slightly acidic, and the lactone dissolves in an equivalent of aqueous NaOH to form sodium D-gluconate [527-07-1] M 218.1, m 2002 0 6o(dec), [ ] D 25 +12o (c 10, H2O), pK2 5 3.6. [cf p 553, Smith & Whelan Biochemical Preparations 10 127 1963, Beilstein 3 IV 1255.]
Spectrum DetailBack Directory
[Spectrum Detail]

delta-Gluconolactone(90-80-2) MS
delta-Gluconolactone(90-80-2) IR1
Well-known Reagent Company Product InformationBack Directory
[Acros Organics]

delta-Gluconolactone, 99%(90-80-2)
[Alfa Aesar]

D-(+)-Glucono-1,5-lactone, 99%(90-80-2)
[Sigma Aldrich]

90-80-2(sigmaaldrich)
[TCI AMERICA]

D-(+)-Glucono-1,5-lactone,>98.0%(T)(90-80-2)
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