Shaanxi Yuantai Biological Technology Co., Ltd. is one of the most reliable manufacturers and suppliers of calcium l-threonate in China. With abundant experience, we warmly welcome you to wholesale bulk calcium l-threonate for sale here from our factory. Quality products and reasonable price are available.
What is calcium threonate?
L-Threonate calcium/Calcium L-threonate is an organic calcium compound produced by condensation, concentration, and crystallization of L-ascorbic acid, calcium carbonate, and hydrogen peroxide. It appears as white granules or crystalline powder, is almost tasteless and odorless, readily soluble in water (including hot water), insoluble in ethanol, ether, and chloroform, and has a melting point above 330℃ (decomposes). It exhibits good acid and alkali resistance and strong thermal stability (no change after heating at 120℃ for 20 minutes or 200℃ for 10 minutes). Its carrier component, L-threonate, is widely found in plants and human gastric acid and is a natural degradation product of L-ascorbic acid.

L-Threonate calcium is primarily absorbed unsaturated via passive diffusion through the intestinal mucosa. The amount of calcium absorbed is directly proportional to the intake; the more ingested, the more absorbed, with an absorption rate as high as 95%. Once in the bloodstream, the calcium exists in small molecule form, with a high proportion of small-molecule calcium in the total calcium, significantly prolonging the metabolic time of calcium in the plasma. This allows sufficient opportunity for blood calcium to be absorbed and utilized by bones, thus achieving high bioavailability.
Clinical trials have confirmed that L-threonate calcium can promote the absorption of vitamin C and prolong its metabolic time in the body. Pharmacodynamic experiments further demonstrate that L-threonate calcium can significantly increase bone calcium content and bone density, enhance bone strength, and reverse the body's negative calcium balance. It is suitable for the adjunctive treatment of osteoporosis, vitamin D deficiency, rickets, and various calcium deficiency diseases.
YTBIO supplies L-threonate calcium with a purity of 98%, consistent batch-to-batch solubility and stability, complete certifications, and flexible delivery. Samples are welcome for testing.
We support for buyers:
* Sample is available upon the buyer requirements to test
* Detection by third party
* Document set
* Fast delivery
* After service
* Visit the factory
Product Details
| Product Name | Calcium L-Threonate |
| Appearance | White powder |
| CAS | 70753-61-6 |
| MF | C8H14CaO10 |
| MW | 310.29 |
|
Test Items |
Test Standard |
Test Result |
Test Method |
|
Character |
White or almost white powder |
White powder |
USP NF 2024 |
|
Loss on drying |
≤1.5% |
0.6% |
USP NF 2024 <731> |
|
Calcium L-threonate (Assay) |
≥98.0% |
99.2% |
Titration |
|
Specific rotation |
+13.0° ~ +16.0° |
+14.5° |
USP NF 2024 <781> |
|
Water insoluble |
≤0.1% |
<0.1% |
USP NF 2024 |
|
pH |
6.0 ~ 8.0 |
7.89 |
GB/T 9724 |
|
Lead (Pb) |
≤2 ppm |
<2 ppm |
USP NF 2024 <251> |
|
Arsenic (As) |
≤3 ppm |
<3 ppm |
USP NF 2024 <211> |
|
Iron (Fe) |
≤100 ppm |
<100 ppm |
USP NF 2024 <241> |
|
Cadmium (Cd) |
≤1 ppm |
<1 ppm |
USP NF 2024 <231> |
|
Mercury (Hg) |
≤0.5 ppm |
<0.5 ppm |
USP NF 2024 <261> |
|
Total Plate Count |
≤1000 cfu/g |
<1000 cfu/g |
USP NF 2024 <2021>/<2022> |
|
Total Yeast & Mold |
≤100 cfu/g |
<100 cfu/g |
USP NF 2024 <2021>/<2022> |
|
Staphylococcus aureus |
Negative |
Negative |
USP NF 2024 <2021>/<2022> |
|
Escherichia coli |
Negative |
Negative |
USP NF 2024 <2021>/<2022> |
|
Salmonella |
Negative |
Negative |
USP NF 2024 <2021>/<2022> |
|
Bulk Density |
0.2 g/mL ~ 0.4 g/mL |
0.27 g/mL |
USP NF 2024 <616> |
|
Tap Density |
0.45 g/mL ~ 0.70 g/mL |
0.50 g/mL |
USP NF 2024 <616> |
|
Conclusion |
This batch of product complies with the specifications |
||
|
Storage |
Store in a cool, dry, well-ventilated place. Keep away from strong light, heat and direct moisture. Keep the container tightly closed after use. |
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|
Packaging |
25kg per drum, with double-layer food-grade plastic bags inside and fiber drums outside (or as per customer's requirements). |
||
|
Shelf Life |
24 months when stored under the specified conditions and in original unopened packaging. |
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What are the benefits?
Compared with other common calcium sources, Calcium L-threonate not only has the advantages of high calcium content and high solubility, but is also particularly easy to absorb without the need for gastric acid dissociation. After entering the human body, it exists in a molecular state and is directly absorbed by small intestinal mucosal cells. After entering the blood, the absorption rate can be as high as 95%, which is four times the absorption rate of other calcium sources. It does not cause any irritation to the gastrointestinal tract, so there is no discomfort for people, but the relative price is also higher. Pharmacodynamic experiments have shown that calcium L-threonate can increase bone calcium content, bone density and bone strength, promote the growth of osteoblasts, and has a good effect on height development.

The entire molecule together with calcium and organic groups is directly absorbed by the intestines, which is an unsaturated absorption process. The passive absorption of calcium is directly proportional to the intake, that is to say, the more you intake, the more you absorb.
Calcium L-threonate enters the plasma through passive diffusion of molecules. The proportion of calcium in the form of small molecules in the total calcium increases, which prolongs the metabolism time of calcium entering the plasma, allowing sufficient time for blood calcium to metabolize with bone calcium. , so it has high bioavailability and good calcium supplementation effect.
Medical experiments have proven that the absorption rate of Calcium L-threonate is 95%, which can prevent and eliminate various symptoms caused by calcium deficiency. It has high solubility, good absorption, and no irritation to the gastrointestinal tract. It is very suitable for children, Calcium supplements are recommended for sensitive groups such as pregnant women, nursing mothers, and the elderly.
Application direction
Calcium L-threonate is a product that dissolves very easily when exposed to hot water. When exposed to products such as ethanol or ether, you don't have to worry about dissolution, so you must pay attention when storing it. Do not store with hot water. The melting point of this product is above 300 degrees Celsius.
If L-calcium threonate is used in the correct way, it can exert many effects and functions. It can be used not only in the pharmaceutical industry, but also in many food processing industries or in the production of health care products. You can also consider using it, for example, it can be used as a nutritional supplement product, or even as a calcium supplement product, which has very good effects on supplementing calcium sources or improving the body's immune function.
In oral care products such as toothpaste, it can help remineralize tooth enamel, enhance teeth's resistance to acid, and reduce the risk of cavities.
It can be used as a nutritional fortifier, added to baby food, bread, noodles, and other products to increase their calcium content.
In some medications, it is used as a calcium supplement to aid in the treatment of calcium metabolism disorders or to supplement calcium intake.

Product Dosage
As a food additive: the additive quantity is preferred to be 1-5%.
As a beverage additive: the additive quantity is preferred to be 0.01-0.1%
Products Development trend
Market Trends
Benefiting from the rapid development of the global food industry, particularly its widespread application in beverages, pastries, and condiments, the global market size for L-threonate calcium will continue to maintain stable growth.
Geographical Distribution Characteristics
Geographically, North America and Europe are the main consumer regions for food-grade L-threonate calcium. North America, especially the United States, has consistently been the world's largest consumer market due to high consumer acceptance of food additives and a mature food industry. Consumers' pursuit of healthy foods has driven continuous demand growth. Although the European market is subject to strict food safety regulations, consumer preferences for healthy foods have led to steady growth in demand for L-threonate calcium, and regulatory updates have further expanded its application in the food industry. In the Asian market, particularly in China and India, demand for food-grade L-threonate calcium is rapidly increasing due to consumption upgrades and the pursuit of high-quality food.
Product Classification
From a product type perspective, food-grade L-threonate calcium is mainly divided into two categories: naturally extracted and chemically synthesized. Naturally extracted products are favored by consumers due to their natural and healthy characteristics, and their market share is increasing year by year. Chemically synthesized products currently dominate the market due to their lower cost and stable production volume. It is projected that in the coming years, with advancements in biotechnology and increasing consumer demand for health foods, the market share of naturally extracted products will further expand.
contact Us
Contact our product consultant now for technical information, samples, and the latest quote:
Telephone:+8617782577059
Email:sales@sxytbio.com
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