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Ascorbate

Ascorbate structure

CAS No:
299-36-5
Formula:
C6H7O6
Chemical Name:
Ascorbate
Synonyms:
L-Ascorbic acid,ion(1-);Ascorbate anion;Ascorbate(1-);L-Ascorbic acid conjugate base;Ascorbate;Ascorbic acid monoanion;63983-49-3;329031-79-0
Categories:
Active Pharmaceutical Ingredients > Antibiotics

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Ascorbate Basic Attributes

Molecular Weight：

176.12

Exact Mass：

175.024

EC Number：

200-066-2

Characteristics

PSA：

110

XLogP3：

-1

Appearance：

L-ascorbic acid is a white to very pale yellow crystalline powder with a pleasant sharp acidic taste. Almost odorless. (NTP, 1992)

Density：

1.65 g/cu cm at 25 deg C

Melting Point：

190-192 deg C (some decomposition)

Water Solubility：

Solubility in water: 80% at 100 deg C, 40% at 45 deg C

Storage Conditions：

Solutions of ascorbic acid are rapidly oxidized in air and in alkaline media; the drug should be protected from air and light.

Vapor Pressure：

9.28X10-11 mm Hg at 25 deg C (est)

Specific rotation：

[α]D/20 between + 20,5° and + 21,5° (10 % w/v aqueous solution)

Explosive limit：

Dust forms explosible mixtures in air with moderate explosion severity.

Odor：

Odorless

Taste：

Pleasant, sharp, acidic taste

PH：

Between 2,4 and 2,8 (2 % aqueous solution)

PKA：

4.7(at 10 °C)

Safety Information

Stability/Shelf Life：

Stable to air when dry; impure preparation and in many natural products vitamin oxidizes on exposure to air and light. Aqueous solutions are rapidly oxidized by air, accelerated by alkalies, iron, copper