Ascorbic Acid CAS＃50-81-7

alpha 

20.5 º (c=10,H2O)

Boiling point 

227.71°C (rough estimate)

density 

1,65 g/cm3

FEMA 

2109 | ASCORBIC ACID

refractive index 

21 ° (C=10, H2O)

storage temp. 

Store at +5°C to +30°C.

solubility 

H2O: 50 mg/mL at 20 °C, clear, nearly colorless

pka

4.04, 11.7(at 25℃)

form 

powder

color 

white to slightly yellow

PH

3.59(1 mM solution);3.04(10 mM solution);2.53(100 mM solution);

PH Range

1 - 2.5

Odor

Odorless

Appearance

colorless solid

biological source

synthetic (organic)

Odor Type

green

Optical Rotation

[α]25/D 19.0 to 23.0°, c = 10% in H2O

Water Solubility 

333 g/L (20 ºC)

Merck 

14,830

BRN 

84272

BCS Class

1

Stability:

Stable. May be weakly light or air sensitive. Incompatible with oxidizing agents, alkalies, iron, copper.

InChIKey

CIWBSHSKHKDKBQ-JLAZNSOCSA-N

LogP

-1.85

CAS DataBase Reference

50-81-7(CAS DataBase Reference)

NIST Chemistry Reference

L-Ascorbic acid(50-81-7)

EPA Substance Registry System

Ascorbic acid (50-81-7)

Absorption

cut-off at 306nm in H2O at 1M

Risk Statements 

Safety Statements 

24/25-36-26

WGK Germany 

1

RTECS 

CI7650000

TSCA 

Yes

HS Code 

29362700

Hazardous Substances Data

50-81-7(Hazardous Substances Data)

Toxicity

LD50 oral in rat: 11900mg/kg