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Ascorbic Acid Structure

Ascorbic Acid

Chemical Properties

Melting point 190-194 °C (dec.)
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
form  powder
pka 4.04, 11.7(at 25℃)
color  white to slightly yellow
PH 3.59(1 mM solution);3.04(10 mM solution);2.53(100 mM solution);
Odor Odorless
PH Range 1 - 2.5
optical activity [α]25/D 19.0 to 23.0°, c = 10% in H2O
Odor Type green
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
Substances Added to Food (formerly EAFUS) ASCORBIC ACID
SCOGS (Select Committee on GRAS Substances) L-Ascorbic acid
FDA 21 CFR 101.9; 104.20; 310.545
CAS DataBase Reference 50-81-7(CAS DataBase Reference)
NCI Dictionary of Cancer Terms ascorbic acid; vitamin C
FDA UNII PQ6CK8PD0R
NCI Drug Dictionary ascorbic acid
ATC code G01AD03,S01XA15
NIST Chemistry Reference L-Ascorbic acid(50-81-7)
EPA Substance Registry System Ascorbic acid (50-81-7)
Cosmetics Info Ascorbic Acid

Safety

Symbol(GHS)
Signal wordWarning
Hazard statements H226-H319
Precautionary statements P210-P305+P351+P338-P370+P378
Hazard Codes 
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
NFPA 704:
1
1 1

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