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L-Ascorbic acid

Name: <SC>L</SC>-Ascorbic acid
Brand: SIAL

≥99.0% (RT), powder or crystals (possibly with chunks), puriss. p.a.

Synonym(s):

L-Threoascorbic acid, Antiscorbutic factor, Vitamin C

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About This Item

Empirical Formula (Hill Notation):

C₆H₈O₆

CAS Number:

50-81-7

Molecular Weight:

176.12

NACRES:

NA.21

PubChem Substance ID:

57653660

UNSPSC Code:

12352100

EC Number:

200-066-2

MDL number:

MFCD00064328

Beilstein/REAXYS Number:

84272

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Properties

Product Name

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

biological source

synthetic (Organic)

Quality Segment

200

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

SMILES string

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

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

InChI key

CIWBSHSKHKDKBQ-JLAZNSOCSA-N

Gene Information

human ... SLC23A2(9962)

Description

General description

L-Ascorbic acid or vitamin C is a water-soluble vitamin found in various foodstuffs. Benefits of vitamin C may include protection against immune system deficiencies, cardiovascular disease, hyperpigmentation, skin protection, anti-aging, iron absorption, and red blood cell production. It is also useful in the biosynthesis of collagen, L-carnitine, and neurotransmitters.

Application

L-Ascorbic acid can be used as a reducing agent for the preparation of reduced graphene oxide (rGO). It does not eliminate the oxygen functional group on the surface of rGO that can be advantageous for the synthesis of metal nanoparticles.

Other Notes

Starting material for the synthesis of chiral building blocks

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This Item	95209	95212	A5960
Sigma-Aldrich 95210 L-Ascorbic acid	Sigma-Aldrich 95209 L-Ascorbic acid	Sigma-Aldrich 95212 L-Ascorbic acid	Sigma-Aldrich A5960 L-Ascorbic acid
grade puriss. p.a.	grade -	grade -	grade -
biological source synthetic (Organic)	biological source synthetic	biological source synthetic	biological source -
assay ≥99.0% (RT)	assay ≥99.5% (RT)	assay 99.0-100.5%	assay ≥99.0%
form powder or crystals (possibly with chunks)	form powder or crystals	form solid	form crystalline
solubility H₂O: 50 mg/mL at 20 °C, clear, almost colorless	solubility H₂O: 1 M at 20 °C, clear, colorless	solubility water: soluble 176 g/L at 20 °C	solubility H₂O: 0.5 M, clear, colorless
cation traces Ca: ≤25 mg/kg, Co: ≤5 mg/kg, Cu: ≤5 mg/kg, K: ≤50 mg/kg, Mn: ≤5 mg/kg, Ni: ≤5 mg/kg, Zn: ≤5 mg/kg, Cd: ≤5 mg/kg, Fe: ≤2 mg/kg, Na: ≤50 mg/kg, heavy metals: ≤5 ppm (by ICP-OES), Cr: ≤5 mg/kg, Pb: ≤5 mg/kg, Mg: ≤5 mg/kg	cation traces Al: ≤5 mg/kg, As: ≤0.1 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤25 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤50 mg/kg, Li: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤5 mg/kg, Na: ≤50 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg	cation traces -	cation traces Al: ≤0.0005%, Ca: ≤0.0005%, Cu: ≤0.0005%, Fe: ≤0.0005%, K: ≤0.005%, Mg: ≤0.0005%, NH₄⁺: ≤0.05%, Na: ≤0.005%, Pb: ≤0.001%, Zn: ≤0.0005%

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Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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