Pharm-Rx R-Alpha Lipoic Acid

Pharm-Rx R-Alpha Lipoic Acid is a pale yellowish powder. It is freely soluble in alcohol and insoluble in water. It is an antioxidant that removes free radicals from the human body and can be added to foods, beverages, medicines, and other products as functional nutritional supplements.

Ingredient Name: R-Alpha Lipoic Acid

Functions: Antioxidant

Labeling Claims: Allergen-free, Artificial Flavor-Free, BSE-free, Carrier Free, Colorants-free, Ethylene Oxide-free, GMO-free, Gluten-free, Halal, Irradiation-free, Kosher, Non-GMO, Not Listed In California Proposition 65, TSE-free

Certifications & Compliance: California Proposition 65, Gluten-free, Halal, Kosher, SARA 302, SARA 311/312, SARA 313

Benefit Claims (Health): Antioxidant Properties

Synonyms: (R)-(+)-Lipoate, (R)-1,2-Dithiolane-3-Pentanoic Acid, (R)-1,2-Dithiolane-3-Valeric Acid, (R)-6,8-Thioctic Acid, alpha-Lipoic Acid, D-Thioctic Acid, Lipoic Acid, R-(+)-Thioctic Acid, Thioctic Acid, Thioctic Acid D-Form, α-Lipoic Acid

Ask Pharm-Rx Chemical Corp. Questions

Mark Bostel avatar

Enhanced TDS

Identification & Functionality

Ingredient Name
Food Ingredients Functions
Pharma & Nutraceuticals Functions
Molecular formula

Features & Benefits

Benefit Claims (Health)
Food Ingredients Features

Applications & Uses


Physical Form
A pale yellowish powder
Chemical Properties
ValueUnitsTest Method / Conditions
Mercury Contentmax. 0.1ppmCurrent GB 5009.268/ ICP-MS
Arsenic Contentmax. 1ppmCurrent GB 5009.268/ ICP-MS
Physical Properties
ValueUnitsTest Method / Conditions
Loss on Dryingmax. 0.5%Q/FJKH 008-2020
Typical Properties
ValueUnitsTest Method / Conditions
Molar Mass206.33g/mol
Melting Point47 - 50°C
Microbiological Values
ValueUnitsTest Method / Conditions
Yeast & Molds Countmax. 100cfu/gCurrent GB 4789.15
Total Coliformsmax. 100cfu/gCurrent GB 4789.3
Total Aerobic Countmax. 1000cfu/gCurrent GB 4789.2
Staphylococcus AureusAbsentin 25gGB 4789.10-2016
Salmonella SpeciesAbsentin 25gCurrent GB 4789.4
Escherichia Colimax. 10cfu/gCurrent GB 4789.38
ValueUnitsTest Method / Conditions
Toluenemax. 1ppmQ/FJKH 008-2020
Tapped Densitymin. 0.155g/mlGB/T 21354-2008
Residue on Ignitionmax. 0.8%Q/FJKH 008-2020
R/S ratio80 - 90 /10 - 20%KH-CX(17)/i-RL(10)-C/0
Particle size (Through #40 Mesh)100%Q/FJKH 008-2020
Optical (Specific) Rotation70 - 90°Q/FJKH 008-2020
Heavy Metals (as Pb)max. 5mg/kgQ/FJKH 008-2020
Ethyl Acetatemax. 200ppmQ/FJKH 008-2020
Cyclohexanemax. 400ppmQ/FJKH 008-2020
Bulk Densitymin. 0.120g/mlGB/T 20316.2-2006
Assay98.0 -101.0%Q/FJKH 008-2020
Heavy Metals
ValueUnitsTest Method / Conditions
Lead Contentmax. 0.5ppmCurrent GB 5009.268/ ICP-MS
Cadmium Contentmax. 1ppmCurrent GB 5009.268/ ICP-MS
ValueUnitsTest Method / Conditions
Solubility in Water (at 20°C)0.9g/L
Solubility in Ethanol50g/L

Regulatory & Compliance

Packaging & Availability

Packaging Information

This product is packed in materials that provide adequate, securely sealed protection, light-resistant, and is free from foreign substances.

Storage & Handling

Shelf Life
2 years
Storage and Shelf Life Conditions
  • It is recommended that this product should be used within 2 years from the date of manufacture.
  • Store in its original light-resistant packaging in a well-closed container, keep in a dry and well-ventilated, shaded area protected from direct sunlight and moisture. Recommended storage temperature: ≤ 25°C (77°F). Avoid high temperature or excessive heat.