CAS No: 526-83-0 tartaric acid
87-69-4 dextrotartaric acid L-(R, R)-(+)-tartaric acid natural isomer
147-71-7 levotartaric acid D-(S, S)-(?)-tartaric acid unnatural isomer
147-73-9 mesotartaric acid (2R, 3S)-tartaric acid
133-37-9 racemic acid DL-(S, S/R, R)-(±)-tartaric acid
Chemical Name: 2, 3-dihydroxybutanedioic acid
Molecular Formula: C4H6O6
Molecular Weight: 150.09
Chemical Structural:

levotartaric acid (D-(?)-tartaric acid) dextrotartaric acid (L-(+)-tartaric acid) mesotartaric acid

DL-tartaric acid (racemic acid)
(when in 1:1 ratio)

Naturally occurring tartaric acid is chiral, the form is L-(+)-tartaric acid or dextrotartaric acid. It occurs in many plants, particularly grapes, bananas and tamarinds. The enantiomeric form is D-(?)-tartaric acid or levotartaric acid, and the achiral form is mesotartaric acid. DL-tartaric acid is a 1:1 mixture of the levo and dextro forms, it is distinct from mesotartaric acid and was called racemic acid.
Tartaric acid is a white crystalline organic acid. It is one of the main acids found in wine. It is added to other foods to give a sour taste, and is used as an antioxidant. Tartrates, such as, cream of tartar (potassium bitartrate), Rochelle salt (potassium sodium tartrate) and tartar emetic (antimony potassium tartrate) are used to enhance flavours in foods, confectionery and beverages.
Note: the dextro and levo prefixes are not related to the D/L configuration (which is derived from the reference D- or L-glyceraldehyde), but to the orientation of the optical rotation, (+) = dextrorotatory, (?) = levorotatory.

L-(+)-Tartaric acid

Chemical Name: (2R, 3R)-2, 3-dihydroxy butane-1.4-dioic acid
Structural Formula:

Character: Colorless or white crystalline, odorless, acdic taste.
Uses: widely used as acidulant in beverage and other foods, such as soft drinks, wine, candy, bread and some colloidal sweetmeats.

D-(-)-Tartaric acid

Chemical Name: (2S, 3S)-2, 3-dihydroxy butane-1.4-dioic acid
Structural Formula:

Character: Colorless or white crystalline, odorless, acdic taste.
Uses: It is mainly used as sour agent.

DL-Tartaric Acid

Structural Formula:

Character: Colorless or white crystalline, odorless, acdic taste.
Uses: as beer vesicant and food sourness agent and flavoring, its sourness is the citric acid 1.3 times, and especially is suitable to do the sourness agent of the grape juice.

Standards: FCC IV / BP2005 / USP24
Packing: 25kg / bag
Storage: Keep container tightly closed. Keep in a cool, dry, well-ventilated place.