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DL-tartaric acid

CAS Number
133-37-9
EC Number
205-105-7
Chemical Formula
C4H6O6
Molecular Weight
150.09 g/mol

Description

DL-tartaric acid (CAS 133-37-9 ) is the racemic form of tartaric acid, produced synthetically rather than derived from wine byproducts. It functions as an acidulant, pH buffer, and stabilizer across food, pharmaceutical, and personal care manufacturing. In food and beverage production, it acidifies confectionery, baked goods, and soft drinks where a clean, tart flavor profile is required. Pharmaceutical formulators use it as a buffering agent in effervescent tablets and oral solutions. Controlled pH directly affects active ingredient stability and dissolution rate in these medical applications. In personal care, it adjusts pH in creams, serums, and hair treatments, contributing to product stability and skin compatibility. It also functions as a chelating agent in formulations where metal ion control is needed to prevent oxidative degradation. This versatility makes it a staple ingredient for manufacturers seeking consistent performance across diverse product lines. DL-tartaric acid is supplied as a white crystalline powder or fine granules for easy handling. Food-grade material meeting FCC specifications is the most commonly sourced grade for acidulant applications in the industry. Pharmaceutical-grade material conforming to USP and Ph.Eur. monographs is available for regulated manufacturing environments. These high-purity standards ensure the ingredient meets strict safety and quality requirements for global distribution. Contact us for supply of DL-tartaric acid Request Quote

Other Names (Synonyms)

2,3-Dihydroxybutanedioic acid | RefChem:935304 | GlyTouCan:G35198MQ | G35198MQ | Butanedioic acid, 2,3-dihydroxy-, (2R,3R)-rel- | Tartaric acid, (±)- | Butanedioic acid, 2,3-dihydroxy-, (R*,R*)-(±)-

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point206 °C
Boiling Point191.59°C (rough estimate)
Density1.79 g/cm³
Flash Point210 °C
Appearancewhite crystalline powder
ColorWhite
Odorat 100.00 %. very mild caramellic
FormLiquid
Water Solubilitysoluble
Vapor Pressure<0.1 hPa (20 °C)
Refractive Index1.5860 (estimate)
pH1.6 (100g/l, H2O, 25℃)
Log P-1.43

Safety & Handling

Danger
GHS05· CorrosiveGHS07· Irritant

Hazard Statements

H315Causes skin irritation
H318Causes serious eye damage
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary Statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P271Use only outdoors or in a well-ventilated area.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P317Get emergency medical help.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P233Store in a well-ventilated place. Keep container tightly closed.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29181200
Storage Class11 - Combustible Solids
WGK (Germany)3