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L(+)-Tartaric acid

L(+)-Tartaric acid structure

CAS No:
87-69-4
Formula:
C4H6O6
Chemical Name:
L(+)-Tartaric acid
Synonyms:
FEMA 3044;DIHYDROXYSUCCINIC ACID;DEXTROTARTARIC ACID;ACIDUM TARTARICUM;2,3-DIHYDROXYDUTANEDIOIC ACID;(2R,3R)-(+)-TARTARIC ACID;d-alpha,beta-dihydroxysuccinicacid;dextro-rotation-2,3-dihydroxybutanedioicacid
Categories:
Food Additives > Acidity Regulators

Description

Tartaric acid occurs as colorless monoclinic crystals, or a white or almost white crystalline powder. It is odorless, with an extremely tart taste. L-(+)-Tartaric Acid is a naturally occurring chemical compound found in berries, grapes and various wines. It provides antioxidant properties and contributes to the sour taste within these products.

ChEBI: L-tartaric acid is a tetraric acid that is butanedioic acid substituted by hydroxy groups at positions 2 and 3. It is a conjugate acid of a L-tartrate(1-). It is an enantiomer of a D-tartaric acid.

L(+)-Tartaric acid belongs to the group of carboxylic acids, and is abundantly found in grapes and wine. It is widely used in drugs, food, and beverage industry.

Moderately toxic by intravenous route. Mildly toxic by ingestion. Reaction with silver produces the unstable silver tartrate. When heated to decomposition it emits acrid smoke and irritating fumes.

L(+)-Tartaric acid Basic Attributes

Molecular Weight：

150.09

BRN：

1725147

EC Number：

201-766-0

TSCA：

TSCA listed

Color/Form：

White or colorless

HScode：

29181200

Characteristics

Density：

1.76

Melting Point：

170-172 °C(lit.)

Boiling Point：

191.59°C (rough estimate)

Refractive Index：

12.5 ° (C=5, H2O)

Water Solubility：

1390 g/L (20 ºC)

Vapor Pressure：

<5 Pa (20 °C)

Vapor Density：

5.18 (vs air)

Flammability characteristics：

Not classified

Odor：

at 100.00 %. odorless

PH：

3.18(1 mM solution);2.55(10 mM solution);2.01(100 mM solution);

PKA：

2.98, 4.34(at 25℃)

Henrys Law Constant：

4.9×1015mol/(m3Pa) at 25℃, Burkholder et al. (2019)

Autoignition Temperature：

797 °F

Critical Temperature & Pressure：

Store at +5°C to +30°C.

Safety Information

wgk germany：

hazard class code：

safety instructions：

26-36-37/39-36/37/39

RTECS Number：

WW7875000

Storage features：

The bulk material is stable and should be stored in a well-closed container in a cool, dry place.

Hazard Statements：

36/37/38-41

Hazardous Reactivities：

Tartaric acid is incompatible with silver and reacts with metal carbonates and bicarbonates (a property exploited in effervescent preparations).

L(+)-Tartaric acid Use and Manufacturing

Uses

In the soft drink industry, confectionery products, bakery products, gelatin desserts, as an acidulant. In photography, tanning, ceramics, manufacture of tartrates. The common commercial esters are the diethyl and dibutyl derivatives used for lacquers and in textile printing. Pharmaceutic aid (buffering agent).

L(+)-Tartaric acid is widely utilized in pharmaceutical industries. It is used in soft drinks, confectionaries, food products, gelatin desserts and as a buffering agent. It forms a compound, TiCl2(O-i-Pr)2 with Diels-Alder catalyst and acta as a chelate agent in metal industries. Owing to its efficient chelating property towards metal ions, it is used in farming and metal industries for complexing micronutrients and for cleaning metal surfaces, respectively.

Production

Tartaric acid occurs naturally in many fruits as the free acid or in combination with calcium, magnesium, and potassium.Commercially, L-(＋)-tartaric acid is manufactured from potassium tartrate (cream of tartar), a by-product of wine making. Potassium tartrate is treated with hydrochloric acid, followed by the addition of a calcium salt to produce insoluble calcium tartrate. This precipitate is then removed by filtration and reacted with 70% sulfuric acid to yield tartaric acid and calcium sulfate.

Material

Glucose

Hydrochloric acid

Sulfuric acid

Nitric acid

Hydrogen peroxide

Downstream Products

Carbon dioxide

Levamisole hydrochloride

Glycine

Acetic acid

Glycolic acid

Recommended Suppliers of L(+)-Tartaric acid

Duter Contact Supplier

CN
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Trader Supplier of Ascorbic acid,Sodium saccharin,1,4-Butynediol,Glycine,Vitamins,DMSO

Food grade L-Tartaric Acid DL Tartaric Acid

CAS No.: 87-69-4

Grade: Food Grade

Content: 99.5%

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