Chemical Property of Ascoric Acid
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Chemical Property:
- Vapor Pressure:3.54E-12mmHg at 25°C
- Boiling Point:550.8°Cat760mmHg
- PKA:4.1(at 24℃)
- Flash Point:224.7°C
- PSA：130.77000
- Density:g/cm3
- LogP:3.13390
- Purity/Quality:
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99% , *data from raw suppliers
ASCORBIC ACID COMPD WITH 1-((1-PHENYLCYCLOHEXYL)ACETYL)-4-(2-PHENYLETHYL)PIPERAZINE 95.00% *data from reagent suppliers
Safty Information:
- Pictogram(s):
- Hazard Codes:
- MSDS Files:
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SDS file from LookChem
Useful:
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Description
Ascorbic acid is a naturally occurring organic compound with antioxidant properties. It is a white solid, but impure samples can appear yellowish. It dissolves well in water to give mildly acidic solutions. Ascorbic acid is one form ("vitamer") of vitamin C. It was originally called L-hexuronic acid, but when it was found to have vitamin C activity in animals ("vitamin C" being defined as a vitamin activity, not then a specific substance), the suggestion was made to rename L-hexuronic acid. The new name for L-hexuronic acid is derived from a- (meaning "no") and scorbutus (scurvy), the disease caused by a deficiency of vitamin C. Because it is derived from glucose, many animals are able to produce it, but humans require it as part of their nutrition. Other vertebrates lacking the ability to produce ascorbic acid include other primates, guinea pigs, teleost fishes, bats,and birds, all of which require it as a dietary micronutrient (that is, a vitamin).
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Uses
Vitamin (antiscorbutic); acidifier (urinary). ascorbic acid (vitamin C) is ascorbic acid and its derivatives, such as ascorbyllinoleate, are said to have skin-lightening and antioxidant properties. Its stability is a main concern when incorporating it into cosmetic formulations. It is termed vitamin C, a water-soluble vitamin that prevents scurvy, helps maintain the body’s resistance to infection, and is essential for healthy bones and teeth. It is the most easily destroyed vitamin and processing is recommended in stainless steel or glass. Storage at below ?18°C is recommended. In its dry form it is nonreactive, but in solution it readily reacts with atmospheric oxygen and other oxidizing agents. One part is equivalent to one part erythorbic acid. It is used as a vitamin supplement in beverages, potato flakes, and breakfast foods; and as a dough conditioning agent to strengthen and condition bread roll doughs. It is also used as an antioxidant to increase shelf life in canned and frozen processed foods. It is used in conjunction with BHA, BHT, and propyl gallate to regenerate them following the chemical changes they undergo when they prevent fat rancidity in bologna and other meats. Other forms of are isoascorbic (erythorbic) acid, sodium ascorbate, and sodium isoascorbate. Ascorbic acid is easily oxidized and so is used as a reductant in photographic developer solutions (among others) and as a preservative. In fluorescence microscopy and related fluorescence - based techniques, ascorbic acid can be used as an antioxidant to increase fluorescent signal and chemically retard dye photobleaching. It is also commonly used to remove dissolved metal stains, such as iron, from fiberglass swimming pool surfaces. In plastic manufacturing, ascorbic acid can be used to assemble molecular chains more quickly and with less waste than traditional synthesis methods.
