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DL-Tartaric acid

Basic information DESCRIPTION FUNCTIONAL USES Solubility Applications Melting range substances METHOD OF ASSAY Safety Related Supplier

DL-Tartaric acid Basic information

Product Name:
DL-Tartaric acid
CAS:
133-37-9
MF:
C4H6O6
MW:
150.09
EINECS:
205-105-7
Mol File:
133-37-9.mol
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DL-Tartaric acid Chemical Properties

Melting point:
210-212 °C(lit.)
alpha 
[α]D20 -0.2~+0.2° (c=20, H2O)
Boiling point:
191.59°C (rough estimate)
Density 
1.788
vapor pressure 
<0.1 hPa (20 °C)
refractive index 
1.5860 (estimate)
FEMA 
3044 | TARTARIC ACID (D-, L-, DL-, MESO-)
Flash point:
210 °C
storage temp. 
Store below +30°C.
solubility 
H2O: 0.1 g/mL, clear
pka
3.03, 4.37(at 25℃)
form 
Liquid
color 
White
PH
1.6 (100g/l, H2O, 25℃)
Water Solubility 
soluble
Merck 
14,9069
JECFA Number
621
BRN 
1725148
Stability:
Stable. Incompatible with bases, oxidizing agents, reducing agents, silver.
InChIKey
FEWJPZIEWOKRBE-UHFFFAOYSA-N
CAS DataBase Reference
133-37-9(CAS DataBase Reference)
NIST Chemistry Reference
Tartaric acid(133-37-9)
EPA Substance Registry System
Butanedioic acid, 2,3-dihydroxy-, (2R,3R)-rel- (133-37-9)
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Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38-41
Safety Statements 
26-37/39-36
WGK Germany 
3
Autoignition Temperature
425 °C
TSCA 
Yes
HS Code 
29181200

MSDS

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DL-Tartaric acid Usage And Synthesis

DESCRIPTION

Colourless or translucent crystals, or a white crystalline powder; odourless

FUNCTIONAL USES

Synergist for antioxidants, acid, emulsifier, sequestrant, flavouring agent

Solubility

Freely soluble in water; sparingly soluble in ethanol

Applications

Tartaric acid and its derivatives have a plethora of uses in the field of pharmaceuticals. It has been used in the production of effervescent salts, in combination with citric acid, in order to improve the taste of oral medications. The potassium antimonyl derivative of the acid known as tartar emetic is included, in small doses, in cough syrup as an expectorant.

Melting range

200 - 206o with decomposition when heated rapidly in a sealed capillarytube

substances

N potassium permanganate while keeping the solution at 20o . The colour of the solution does not disappear within 3 min.

METHOD OF ASSAY

Weigh accurately about 2 g of the dried sample, dissolve it in 40 ml of water, add phenolphthalein TS, and titrate with 1 N sodium hydroxide. Each ml of 1 N sodium hydroxide is equivalent to 75.04 mg of C4H6O6.

Chemical Properties

Tartaric acid, HOOC(CHOH)2COOH, is a water- and alcohol-soluble colorless crystalline solid with an acid taste and a melting temperature of 170°C (338 OF). It is also known as dihydroxy succinic acid. Tartaric acid is used as a chemical intermediate and a sequestrant,as well as in tanning, effervescent beverages, baking powder, ceramics, photography, textile processing,mirror silvering,and metal coloring.

Chemical Properties

Tartaric acid is odorless, but has a characteristic acid taste. Naturally occurring tartaric acid is generally of the L-configuration (based on the absolute configuration of D-glyceric acid). The L-forms of tartrates are dextrorotatory in solution and thus are designated as L(+)-tartrates. For a detailed description on this chemical, refer to Burdock (1997).

Occurrence

d-Tartaric acid occurs in many fruits or other parts of the plant, free or combined with potassium, calcium or magnesium. It is also reported found in raw, lean fish, white wine, red wine and port wine.

Preparation

The tartrates used in commerce are obtained as a by-product of wine manufacture and have the L(+) configuration. Produced from argols or wine lees, which are formed in the manufacture of wine by extracting the potassium acid tartrate, transforming this into the calcium salt and then acidifying with dilute sulfuric acid; also by oxidation of d-glucose with nitric acid. The dl-tartaric acid is obtained by boiling the d-tartaric acid with an aqueous solution of NaOH or by oxidation of fumaric acid. The l- and the meso-tartaric acid are also known, but are less important.

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DL-Tartaric acidSupplierMore

Nanjing chemical reagent co. LTD Gold
Tel:
13815889511
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3511588639@qq.com
Hefei TNJ Chemical Industry Co.,Ltd. Gold
Tel:
15856988503 551-65418695-
Email:
info@tnjchem.com;sales@tnjchem.com
J & K SCIENTIFIC LTD.
Tel:
400-666-7788 010-82848833-
Email:
jkinfo@jkchemical.com;market6@jkchemical.com
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel:
400-660-8290 21-61259100-
Email:
sh@meryer.com
Alfa Aesar
Tel:
400-610-6006
Email:
saleschina@alfa-asia.com
Basic information DESCRIPTION FUNCTIONAL USES Solubility Applications Melting range substances METHOD OF ASSAY Safety Related Supplier