L-Ascorbic acid

제품 이름

L-Ascorbic acid, puriss. p.a., ≥99.0% (RT)

InChI key

CIWBSHSKHKDKBQ-JLAZNSOCSA-N

InChI

1S/C6H8O6/c7-1-2(8)5-3(9)4(10)6(11)12-5/h2,5,7-10H,1H2/t2-,5+/m0/s1

SMILES string

OC([C@]([C@@H](O)CO)([H])O1)=C(O)C1=O

biological source

synthetic (Organic)

grade

puriss. p.a.

assay

≥99.0% (RT)

form

powder or crystals (possibly with chunks)

optical activity

[α]20/D +21±0.5°, c = 10% in H₂O

ign. residue

≤0.1% (as SO₄)

loss

≤0.1% loss on drying, 110 °C

color

white to off-white

pH

2.2-2.5 (25 °C, 50 mg/mL in H₂O)

mp

190-194 °C (dec.)

solubility

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

anion traces

chloride (Cl^-): ≤50 mg/kg
sulfate (SO₄^2-): ≤20 mg/kg

cation traces

Ca: ≤25 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤2 mg/kg
K: ≤50 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Na: ≤50 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg
heavy metals: ≤5 ppm (by ICP-OES)

functional group

ester
hydroxyl
ketone

Quality Level

200

Gene Information

human ... SLC23A2(9962)