【CAS】90-80-2 Molecular formula:C6H10O6 Relative molecular mass:178.14
Structural formula:
一．Product Property：
White crystalline or white crystalline powder, almost odorless, initially sweet and then sour in taste. Soluble in water.
二．Quality Index:
| Parameter | Unit | Specification (Food Grade) |
| Appearance | — | White crystalline powder |
| Assay (C₆H₁₀O₆) | % (w/w) | ≥ 99.0 |
| Loss on Drying | % (w/w) | ≤ 0.5 |
| Residue on Ignition | % (w/w) | ≤ 0.05 |
| Heavy Metals (as Pb) | mg/kg | ≤ 10 |
| Arsenic (As) | mg/kg | ≤ 3 |
| Iron (Fe) | mg/kg | ≤ 20 |
| Chloride (Cl⁻) | % (w/w) | ≤ 0.02 |
| Sulfate (SO₄²⁻) | % (w/w) | ≤ 0.03 |
| Calcium (Ca) | % (w/w) | ≤ 0.03 |
| pH (1% solution) | — | 3.5–4.5 |
| Microbiological Limits | — | Total plate count ≤ 1000 CFU/g; No pathogens |
三.Application scope and Usage：
Glucuronic acid-δ-lactone is used as a coagulant and is mainly employed in the production of tofu. It can also be used as a protein coagulant for dairy products.
四．Package and Storage：
The packaging of this product is 10 pieces / bag.
It should be stored in a cool, dry and well-ventilated warehouse, avoiding direct sunlight and high humidity and temperature conditions. It is recommended that the temperature be ≤ 30℃ and the relative humidity be ≤ 65%. Keep away from corrosive substances such as acids and alkalis. Pay attention to moisture-proof and pressure-proof when stacking. The shelf life of unopened products is generally 24 months. After opening, it is necessary to strictly seal to prevent moisture absorption and caking.
