Product Description
Food Grade Preservative Sorbic Acid CAS: 110-44-1
Description
Sorbic acid, or
2,4-hexadienoic acid, is a natural organic compound used as a food preservative. It has the chemical formula C
6H
8O
2. It is a colourless solid that is slightly soluble in water and sublimes readily. It was first isolated from the unripe berries of the rowan tree (
Sorbus aucuparia), hence its name.
The traditional route to sorbic acid involves condensation of malonic acid and trans-butenal. It can also be prepared from isomeric hexadienoic acids, which are available via a nickel-catalyzed reaction of allyl chloride, acetylene, and carbon monoxide. The route used commercially, however, is fromcrotonaldehyde and ketene. An estimated 30,000 tons are produced annually.
Uses
orbic acid and its salts, such as sodium sorbate, potassium sorbate, and calcium sorbate, are antimicrobial agents often used as preservatives in food and drinks to prevent the growth of mold, yeast, and fungi. In general the salts are preferred over the acid form because they are more soluble in water, but the active form is the acid. The optimal pH for the antimicrobial activity is below pH 6.5. Sorbates are generally used at concentrations of 0.025% to 0.10%. Adding sorbate salts to food will, however, raise the pH of the food slightly so the pH may need to be adjusted to assure safety. It is found in many other foods, such as cheeses and breads.
Specification
| Check item |
Specifications |
| Content |
98.0-101.0 % |
| Loss on drying |
≤0.5 % |
| Melting range |
132-135ºC |
| Residue on lignition |
≤ 0.2% |
| Aldehyde as formaldehyde |
≤0.1 % |
| lead |
≤5.0 ppm |
| Arsenic |
≤2 ppm |
| Heavy metals as pb |
≤10 ppm |
| Mercury |
≤1.0 ppm |
Package and shipment
Packing: Packages are 25kg/bag,Which can meet the different package requirement of customers
Shipping: EMS,DHL,By Sea ,etc.
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