Ascorbic Acid USP/BP Standard(Vitamin C),China price supplier

company profile

Qingdao IRO TAIHE International Trade Co., Ltd.

China

Contact: Mr.Tony Liu

Tel: 86-0532-85027466

Number of Employees: < 20

Business Type: Trade

product details

Origin:China

ascorbic acid USP/BP Standard(Vitamin C)

CAS No.: 50-81-7

Molecular Formula: C ₆ H ₈ O ₆                     Molecular Weight: 176.13

Structural Formula:

Property:

The melting point of Ascorbic acid(Vitamin C) is 190-192 ºC,the Alpha is                       20.5 º (c=10,H2O),the water solubility is 333 g/L (20 ºC).

Ascorbic acid(Vitamin C) behaves as a vinylogous carboxylic acid where the electrons in the double bond ("vinyl"), hydroxyl group lone pair, and the carbonyl double bond form a conjugated system. Because the two major resonance structures stabilize the deprotonated conjugate base of ascorbic acid(Vitamin C) , the hydroxyl group in ascorbic acid(Vitamin C) is much more acidic than typical hydroxyl groups. In other words, ascorbic acid(Vitamin C) can be considered an enol where the deprotonated form is an enolate, which is usually strongly basic.

Specification:

Item

Index

Characteristics

White Crystalline Powder

Identification

Positive Reaction

Melting Point

About 190degree Celsius

PH

2.1-2.6

Clarity Of Solution

Clear

Mercury

≤0.1ppm

Zinc

≤25ppm

Arsenic

≤3ppm

Lead

≤2ppm

Loss On Drying

≤0.1%

Colour Of Solution

≤BY7

Copper

≤5ppm

Heavy Metals

≤10ppm

Iron

≤2ppm

Oxalic Acid

≤0.2 %

Sulphate Ash

(Residue On Ignition)

≤0.1%

Specific Optical Rotation

+20.5°- +21.5°

Assay

99.0-100.5%

Organic Volatile Impurities

Pass



Usage:

Ascorbic acid(Vitamin C) takes part in a variety of metabolic processes in human body and helps in inducing the fragility of capillary vessel, and improving the resistibility to illness.

Packing and Storage:Ascorbic acid(Vitamin C) is packed in 25KG net weight carton lined with PE bags(marks can be designed by customers) . Gross Weight 26.5kg/carton.Store in cool, dry and well closed place. Ascorbic acid(Vitamin C) is 2 years in original packages under the described conditions.

Key Words: Ascorbic acid ; vitamin c ; L-Threo-2,3,4,5,6-pentahydroxy-1-hexenoic acid-4-lactone

Item	Index
Characteristics	White Crystalline Powder
Identification	Positive Reaction
Melting Point	About 190degree Celsius
PH	2.1-2.6
Clarity Of Solution	Clear
Mercury	≤0.1ppm
Zinc	≤25ppm
Arsenic	≤3ppm
Lead	≤2ppm
Loss On Drying	≤0.1%
Colour Of Solution	≤BY7
Copper	≤5ppm
Heavy Metals	≤10ppm
Iron	≤2ppm
Oxalic Acid	≤0.2 %
Sulphate Ash (Residue On Ignition)	≤0.1%
Specific Optical Rotation	+20.5°- +21.5°
Assay	99.0-100.5%
Organic Volatile Impurities	Pass