Synonyms: 1,5-Gluconolactone; D-Glucono-1,5-lactone; D-Aldonolactone; D-Glucono-delta-lactone; Gluconic acid lactone; Gluconic lactone; Glucono delta-lactone; GDL
Molecular Formula: C6H10O6
Molecular Weight: 178.14
CAS Number: 90-80-2
EINECS: 202-016-5
Glucono delta-lactone is a lactone of D-gluconic acid. Pure GDL is a white odorless crystalline powder.
GDL is commonly found in honey, fruit juices, and wine. GDL is neutral, but hydrolyses in water to gluconic acid which is acidic, adding a tangy taste to foods, though it has roughly a third of the sourness of citric acid. Glucono delta-lactone is metabolized to glucose; one gram of GDL yields roughly the same amount of metabolic energy as one gram of sugar.
Upon addition to water, GDL is partially hydrolysed to gluconic acid, with the balance between the lactone form and the acid form established as a chemical equilibrium. The rate of hydrolysis of GDL is increased by heat and high pH. GDL may also be useful in controlling termites by weakening their immune system.
Specification
| Product name | Glucono delta-lactone |
| Test Items | Specifications (FCCIV) |
| Appearance | Colorless crystals or powder |
| Identification | Accod with the test |
| Assay | 99.0-100.5% |
| Reducing substances | 0.5% Max |
| Heavy metals | 20ppm Max |
| Arsenic | 3ppm Max |
| Lead | 10ppm Max |
| Calcium | 0.30% Max |
| Chloride | 0.02% Max |
| Sulfate | 0.03% Max |
Performance and usage: The product has fresh preservation and antiseptic actions. It can be used to processing bean products (such as, bean curd), meat products, juice beverage, yeast powder, etc. and can be used for the fresh preservation of fishes ad shrimps.
Package: Paper-plastic compounds bags, 25kgs net each.
Transportation: Handle with care in order to avoid damaging the package; protect them from sunshine or rain. This product is a non-dangerous product and can be transported as a common chemical product.
Storage: Keep in shaded, cool and air places. The shelf time is 2 years

Price:
Packaging Type : Sealed bags
Best Before : 2 years
Shelf Life : 2 years under recommended conditions
Dosage Form : Powder
Strength : High viscosity and emulsification strength
Storage Instructions : Store in a cool dry place away from moisture and direct sunlight
Packaging Type : Bag / Drum
Best Before : 24 months from manufacturing
Shelf Life : 2 Years
Dosage Form : Other, Powder / Granular / Crystalline
Strength : High Sweetness (300500 times sugar)
Storage Instructions : Store in a cool, dry place, sealed container
Packaging Type : HDPE Drums / Aluminum Bags
Best Before : 36 Months from manufacturing date
Shelf Life : 36 Months
Dosage Form : Other, Capsule / Tablet / Powder
Strength : 98% (by HPLC)
Storage Instructions : Store in a cool, dry, and dark place, away from sunlight
Packaging Type : Sealed plastic bags or fiber drums
Best Before : 24 months from manufacturing
Shelf Life : 24 months
Dosage Form : Other, Powder / Solution
Strength : High molecular weight
Storage Instructions : Store in a cool, dry place away from light and moisture