L(+)-Tartaric Acid CAS#87-69-4

- Natural Clean-Label Source
L(+)-Tartaric acid is naturally extracted from grapes, berries and wine matrices. Featuring natural origin, it perfectly fits clean-label, organic and natural food formulation requirements.
- Intense & Refreshing Tart Flavor
It delivers a pure, strong acidic taste with distinctive tartness, effectively enhancing flavor layering and sour perception in beverages and confectionery products.
- Excellent Antioxidant Performance
With inherent antioxidant properties, it inhibits oxidation deterioration, extends product shelf life and supports healthy product labeling claims.
- User-Friendly Physical Form
Supplied as colorless crystals or white crystalline powder, it features stable physical properties, easy handling and uniform dispersion for diverse formulation processes.

L(+)-Tartaric Acid (CAS 87-69-4) is a natural organic acid existing widely in grapes, berries and fermented wine. The product presents as colorless monoclinic crystals or white crystalline powder, odorless with a pure and intense tart taste. Combining natural source advantages and stable antioxidant activity, it serves as a high-quality natural acidulant for food and industrial formulation.

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L(+)-Tartaric acid Chemical Properties

Melting point	170-172 °C(lit.)
alpha	12 º (c=20, H2O)
Boiling point	191.59°C (rough estimate)
bulk density	1000kg/m3
density	1.76
vapor density	5.18 (vs air)
vapor pressure	<5 Pa (20 °C)
FEMA	3044 \| TARTARIC ACID (D-, L-, DL-, MESO-)
refractive index	12.5 ° (C=5, H2O)
Fp	210 °C
storage temp.	Store at +5°C to +30°C.
solubility	H2O: soluble1M at 20°C, clear, colorless
form	Solid
pka	2.98, 4.34(at 25℃)
color	White or colorless
Odor	at 100.00 %. odorless
PH	3.18(1 mM solution);2.55(10 mM solution);2.01(100 mM solution);
biological source	Vitis vinifera
Odor Type	odorless
Optical Rotation	[α]20/D +13.5±0.5°, c = 10% in H2O
Water Solubility	1390 g/L (20 ºC)
Merck	14,9070
JECFA Number	621
BRN	1725147
Dielectric constant	35.9（-10℃）
Stability:	Stable. Incompatible with oxidizing agents, bases, reducing agents. Combustible.
InChIKey	FEWJPZIEWOKRBE-JCYAYHJZSA-N
LogP	-1.43
CAS DataBase Reference	87-69-4(CAS DataBase Reference)
NIST Chemistry Reference	Butanedioic acid, 2,3-dihydroxy- [r-(r,r)]-(87-69-4)
EPA Substance Registry System	Tartaric acid (87-69-4)

Product Applications

Widely applicable across food, industrial and pharmaceutical fields, it acts as a premium acidulant for soft drinks, candies, baked goods and gelatin desserts. Industrially, it is used for photography processing, leather tanning, ceramic production and tartrate compound synthesis. Its commercial esters including diethyl tartrate and dibutyl tartrate are widely adopted in lacquer manufacturing and textile printing. Additionally, it functions as a pH buffering agent in pharmaceutical formulations.

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