Wholesome in bulk™ L-Carnitine L-Tartrate Powder (LCLT)
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Bulk L-Carnitine L-Tartrate Powder for Supplement Manufacturing
L-carnitine L-tartrate is a crystalline powder made from L-carnitine and L-tartaric acid, joined as a 2:1 salt. It contains about 68% L-carnitine by weight, measured by HPLC. We supply it in bulk to supplement brands, contract manufacturers, and formulators. You can request testing documents and samples on the quote form.
A salt form that is easy to specify and easy to handle
L-carnitine L-tartrate has a fixed salt ratio and two components you can assay. Its optical rotation also confirms the L-form. That makes lot to lot comparison simple for buyers and quality teams.
Known active content
The salt holds two parts L-carnitine to one part L-tartaric acid. By weight, that works out to about 68% L-carnitine and 32% L-tartaric acid, so label math is simple.
Easier moisture handling
L-carnitine base is hygroscopic, so it picks up moisture from the air. Makers describe the tartrate salt as nonhygroscopic, which suits capsule filling, tableting, and dry blending.
Two assays on one COA
Good certificates of analysis (COAs) report L-carnitine and L-tartaric acid separately by HPLC. Each has its own range, so you can see that the salt ratio is right.
L-form you can verify
L-carnitine has one chiral center. Specific rotation on the COA confirms the L-form, and chiral chromatography methods can measure any D-carnitine directly.
White, water soluble powder
Most lots are white crystalline powders. The salt dissolves in water to a clear, mildly acidic solution, with a pH of about 3.0 to 4.5 in published specs.
Traceable production
Commercial L-carnitine is made by chemical synthesis or by a microbial biotransformation process. Suppliers can state the route, origin, and solvents used, which completes your supplier file.
Where formulators use L-carnitine L-tartrate
This salt fits measured formats where fill weight and serving size are controlled, including:
- Capsules
- Compressed tablets
- Single ingredient powders
- Sports nutrition powders
- Powdered drink mixes
- Stick packs and sachets
- Gummies, after taste and stability trials
- Private label programs
Plan fill weights from the L-carnitine content on each COA. About 1,470 mg of a 68% lot supplies 1,000 mg of L-carnitine, so recalculate your serving math whenever you switch between the tartrate and the base.
What to check before you buy L-carnitine L-tartrate
Powders sold as L-carnitine can differ in salt form, production route, and test method. Review these points together, and ask for lot documents before you approve a supplier.
Salt form and active content
Confirm the salt on both the specification and the COA. L-carnitine base, L-carnitine L-tartrate, and L-carnitine fumarate are all sold, and each carries a different L-carnitine percentage.
Identity and the L-form
Look for HPLC identity against a reference standard and a specific rotation result inside the stated range. Ask whether the supplier also runs a chiral test for D-carnitine.
Assay method and basis
Check that L-carnitine and L-tartaric acid are each measured by HPLC. Ask whether results are on a dry or as is basis, because that shifts the number you put on a label.
Production route and solvents
Ask whether the material was made by chemical synthesis or by biotransformation. Synthetic route specs usually list residual ethanol by GC and a cyanide test reported as not detectable.
Contaminant limits
Check heavy metals by ICP-MS and microbial limits by USP methods. Compare each limit with your own finished product specification and the markets you sell into.
Origin and supplier file
Ask for the country of manufacture and the producing plant. Many published spec sheets list China as the origin, so a named site makes your supplier approval faster.
Label math: If your label lists L-carnitine per serving, work from the measured L-carnitine percentage on each COA. One gram of the tartrate salt supplies about 680 mg of L-carnitine. State clearly on your label whether a figure refers to the salt or to L-carnitine.
Typical specification for L-carnitine L-tartrate
These values reflect common published specifications for the 2:1 salt. Final figures come from the specification sheet and COA for your lot. NLT means not less than, and NMT means not more than.
| Parameter | Specification | Method |
|---|---|---|
| Identity | L-carnitine L-tartrate (2:1), CAS 36687-82-8 | HPLC retention time against reference standard |
| Appearance | White crystalline powder | Visual |
| L-carnitine | 67.2 to 69.2% | HPLC |
| L-tartaric acid | 30.8 to 32.8% | HPLC |
| Specific rotation | -9.5° to -11.0° | Polarimetry, USP <781> |
| pH (aqueous solution) | 3.0 to 4.5 | USP <791> |
| Loss on drying | NMT 0.5% | USP <731> |
| Residue on ignition | NMT 0.5% | USP <281> |
| Residual ethanol | NMT 0.5% | GC, USP <467> |
| Cyanide | Not detectable | Stated on the COA |
| Particle size | NLT 95% through 60 mesh | USP <786> |
| Bulk density | 0.4 to 0.8 g/mL | USP <616> |
| Lead | NMT 3.0 ppm | ICP-MS |
| Arsenic | NMT 1.0 ppm | ICP-MS |
| Cadmium | NMT 1.0 ppm | ICP-MS |
| Mercury | NMT 0.1 ppm | ICP-MS |
| Total aerobic count | NMT 1,000 cfu/g | USP <2021> |
| Yeast and mold | NMT 100 cfu/g | USP <2021> |
| E. coli and Salmonella | Negative in 1 g and 25 g | USP <2022> |
| Shelf life | 24 months from manufacture, unopened | Stability data |
Storage and handling for bulk L-carnitine L-tartrate
The tartrate salt handles humidity better than the base, but it still keeps best sealed, dry, and cool. These steps keep the powder in good condition between production runs.
Keep it sealed
Close the inner liner after each use and press out the air. Even a nonhygroscopic salt can cake if a bag sits open in a humid room.
Store cool and dry
Keep bags off the floor in a dry room, below 25°C (77°F) unless the spec sheet says otherwise. Keep them away from heat sources.
Keep away from strong light
Leave the powder in its original opaque packaging. Note the color and odor on arrival so you can spot any change during storage.
Rotate stock
Record the lot number and retest date for each bag. Send older lots to production first.
L-carnitine L-tartrate buyer FAQ
Quick answers to the questions procurement and quality teams ask most.
How much L-carnitine is in L-carnitine L-tartrate?
L-carnitine L-tartrate contains about 68% L-carnitine by weight. Published specifications set a range of 67.2 to 69.2%, measured by HPLC. The rest is L-tartaric acid, at about 32%.
What is the difference between L-carnitine base and L-carnitine L-tartrate?
L-carnitine base is the free compound, while L-carnitine L-tartrate is its salt with L-tartaric acid. The base carries more L-carnitine per gram but picks up moisture from the air. The tartrate is easier to handle in capsules, tablets, and dry powders.
How do I confirm the material is the L-form?
Check the specific rotation on the COA. Published specs for L-carnitine L-tartrate call for -9.5° to -11.0°. You can also ask whether your supplier runs a chiral chromatography test for D-carnitine.
How is L-carnitine made?
Commercial L-carnitine is made by chemical synthesis or by a microbial biotransformation process. Many synthetic lots start from epichlorohydrin and use ethanol as a solvent. The COA should match the route, for example with a residual solvent result. The country of manufacture for each lot is provided with your quote.
Does L-carnitine L-tartrate dissolve in water?
Yes. It dissolves to a clear, mildly acidic solution, with a pH of about 3.0 to 4.5 in published specs. Run a trial in your own base, because flavor systems and other acids can shift the final taste.
What documents can I get with an order?
A certificate of analysis (COA) and a specification sheet ship with every order. An allergen statement and a safety data sheet may also be available, depending on the lot in inventory. Contact us to request them.
Can I get a sample before a bulk order?
You can request one by choosing sample options on the quote form. We will confirm availability, size, and timing.
How should I store an opened bag?
Close the liner, press out the air, and keep the bag in a cool, dry place away from strong light. Use the powder within the shelf life shown on the COA.
Request a quote for bulk L-carnitine L-tartrate
Tell us your salt form, quantity, and timing. We will reply with current pricing. Select testing documents and sample options on the quote form.
Order L-Carnitine L-TartrateBulk orders: Choose a pack size above, or use the quote form for larger volumes, testing documents, and sample options. We serve supplement brands, contract manufacturers, product developers, and formulators.
This bulk ingredient is sold for further manufacturing and formulation. The information on this page describes the ingredient and how commercial buyers evaluate it. It is not medical advice. Each finished product brand is responsible for its own labeling and product claims.
