(+)-Weinsure

Bezeichnung:(+)-Weinsure

CAS-Nr87-69-4

Englisch Name:L(+)-Tartaric acid

CBNumberCB8212874

SummenformelC4H6O6

Molgewicht150.09

MOL-Datei87-69-4.mol

Synonyma

(+)-Weinsure

(+)-Weinsure physikalisch-chemischer Eigenschaften

Schmelzpunkt	170-172 °C(lit.)
alpha	12 º (c=20, H2O)
Siedepunkt	191.59°C (rough estimate)
Dichte	1.76
Dampfdichte	5.18 (vs air)
Dampfdruck	<5 Pa (20 °C)
FEMA	3044 \| TARTARIC ACID (D-, L-, DL-, MESO-)
Brechungsindex	12.5 ° (C=5, H2O)
Flammpunkt	210 °C
storage temp.	Store at +5°C to +30°C.
Löslichkeit	H2O: soluble1M at 20°C, clear, colorless
Aggregatzustand	Solid
pka	2.98, 4.34(at 25℃)
Farbe	White or colorless
PH	3.18(1 mM solution);2.55(10 mM solution);2.01(100 mM solution);
Geruch (Odor)	at 100.00 %. odorless
Geruchsart	odorless
Optische Aktivität	[α]20/D +13.5±0.5°, c = 10% in H2O
Wasserlöslichkeit	1390 g/L (20 ºC)
JECFA Number	621
Merck	14,9070
BRN	1725147
Dielectric constant	35.9（-10℃）
Stabilität	Stable. Incompatible with oxidizing agents, bases, reducing agents. Combustible.
InChIKey	FEWJPZIEWOKRBE-JCYAYHJZSA-N
LogP	-1.43
CAS Datenbank	87-69-4(CAS DataBase Reference)
NIST chemische Informationen	Butanedioic acid, 2,3-dihydroxy- [r-(r,r)]-(87-69-4)
EPA chemische Informationen	Tartaric acid (87-69-4)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	36/37/38-41
S-Sätze:	26-36-37/39-36/37/39
WGK Germany	3
RTECS-Nr.	WW7875000
Selbstentzündungstemperatur	797 °F
Hazard Note	Irritant
TSCA	Yes
HS Code	29181200

Gefahreninformationscode (GHS)

L(+)-Tartaric acid Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
Chemische Eigenschaften
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.
Verwenden
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).
Verwenden
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.
Vorbereitung Methode
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.
Definition
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.
Allgemeine Beschreibung
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.
Flammability and Explosibility
Not classified
Pharmazeutische Anwendungen
Tartaric acid is used in beverages, confectionery, food products, and pharmaceutical formulations as an acidulant. It may also be used as a sequestering agent and as an antioxidant synergist. In pharmaceutical formulations, it is widely used in combination with bicarbonates, as the acid component of effervescent granules, powders, and tablets.
Tartaric acid is also used to form molecular compounds (salts and cocrystals) with active pharmaceutical ingredients to improve physicochemical properties such as dissolution rate and solubility.
Biochem/physiol Actions
L-(+)-Tartaric acid serves as a donor ligand for biological processes. It is used as a food additive in candies and soft drinks to impart a sour taste.
Sicherheitsprofil
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.
Sicherheit(Safety)
Tartaric acid is widely used in food products and oral, topical, and parenteral pharmaceutical formulations. It is generally regarded as a nontoxic and nonirritant material; however, strong tartaric acid solutions are mildly irritant and if ingested undiluted may cause gastroenteritis.
An acceptable daily intake for L-(＋)-tartaric acid has not been set by the WHO, although an acceptable daily intake of up to 30 mg/kg body-weight for monosodium L-(＋)-tartrate has been established.
LD50 (mouse, IV): 0.49 g/kg
Lager
The bulk material is stable and should be stored in a well-closed container in a cool, dry place.
Inkompatibilitäten
Tartaric acid is incompatible with silver and reacts with metal carbonates and bicarbonates (a property exploited in effervescent preparations).
Regulatory Status
GRAS listed. Accepted for use as a food additive in Europe. Included in the FDA Inactive Ingredients Database (IM and IV injections; oral solutions, syrups and tablets; sublingual tablets; topical films; rectal and vaginal preparations). Included in nonparenteral medicines licensed in the UK. Included in the Canadian List of Acceptable Non-medicinal Ingredients.

L(+)-Tartaric acid Upstream-Materialien And Downstream Produkte

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