TCS Industries Limited (China-sourced API supplier) supplies Curcumin — Plant Extract CAS 458-37-7 for pharmaceutical B2B procurement — COA, MSDS, and technical documentation available on request.
> Overview
| Product Name | Curcumin |
|---|---|
| Structural Formula |  |
| CAS Number | 458-37-7 |
| Molecular Formula | C21H20O6 |
| Molecular Weight | 368.4 g/mol |
| InChIKey | VFLDPWHFBUODDF-FCXRPNKRSA-N |
| SMILES | Available on request where applicable |
| Appearance | Bright yellow to orange crystalline powder |
| Purity / Grade | By agreed specification and batch COA |
| Storage | Keep tightly closed in a cool, dry, well-ventilated place |
Curcumin (CAS 458-37-7) is the principal curcuminoid extracted from the rhizome of Curcuma longa (turmeric). Chemically it is diferuloylmethane, a symmetrical diarylheptanoid with a β-diketone moiety. Commercial curcumin extract typically contains three curcuminoids: curcumin (curcumin I, 70–80%), demethoxycurcumin (curcumin II) and bisdemethoxycurcumin (curcumin III), standardized to ≥95% total curcuminoids by HPLC.
TCS Industries Limited, a Hong Kong-based trading and sourcing company, supplies bulk curcumin extract in powder form for dietary supplement, functional food, and cosmetic ingredient programs.
> Applications
Dietary supplement capsules and tablets
Curcumin is formulated into hard gelatin or HPMC capsules and tablets for the dietary supplement market. Native curcumin has low oral bioavailability (approximately 1% in humans) due to poor aqueous solubility, rapid metabolism and biliary excretion. Commercial products address this through piperine co-formulation (BioPerine), lipid-based delivery (Meriva phytosome), amorphous solid dispersion (CurcuWin), or nanoparticle encapsulation. Anand et al. (Mol Pharmaceutics, 2007, 4:807–818) provide a detailed review of curcumin bioavailability enhancement strategies.
Functional food and beverage colouring
Curcumin is approved as a food colourant (E100 in the EU, also permitted under FDA 21 CFR 73.600). It imparts a yellow-orange colour to dairy products, confectionery, beverages and mustard. The JECFA ADI is 0–3 mg/kg body weight. Curcumin is oil-soluble; water-dispersible forms use polysorbate 80 or modified starch as carriers for aqueous applications.
Cosmetic and topical formulations
Curcumin is used in skin care products as an antioxidant and natural colourant. It has UV-absorbing properties (absorption maximum near 420 nm in the visible spectrum). Stability in formulation is a challenge: curcumin degrades rapidly at alkaline pH and under light exposure. Formulators typically use encapsulation or ester prodrug derivatives to improve stability in cream and serum bases.
> Sourcing & Supply
TCS Industries Limited supports development, qualification and commercial purchasing discussions for Curcumin with buyers in Germany, France, Italy, Spain, the United Kingdom, the United States, Canada and Australia.
- Evaluation samples: botanical identity, assay basis and document needs are reviewed before dispatch.
- Commercial lots: repeat supply is arranged by specification, extract ratio, marker compound and destination-market requirements.
> Quality & Documentation
Key specification parameters include total curcuminoid content by HPLC (typically ≥95% or ≥90% depending on grade), individual curcuminoid ratio (curcumin I : II : III), loss on drying, residual solvents (ethanol, ethyl acetate, hexane or acetone depending on extraction process), heavy metals (Pb ≤2 ppm, As ≤1 ppm, Cd ≤0.5 ppm, Hg ≤0.1 ppm), pesticide residues (USP <561> / Ph.Eur. 2.8.13), and total aerobic microbial count / yeast and mold. COA, MSDS, and non-irradiation declaration are standard documents.
> Packaging
Curcumin is light-sensitive and should be stored protected from light in sealed containers. Standard packaging includes aluminium-foil-lined bags inside fibre drums (typically 25 kg net), double PE bags for smaller lots, and palletized export packaging. Curcumin powder stains surfaces and equipment intensely; dedicated handling is recommended. Labels and documents are checked before dispatch.
> Pricing & MOQ
Pricing is quoted by marker specification, extract ratio, packaging and destination. Samples, 25 kg packs and pallet quantities can be discussed according to project stage.
> Regulatory & Compounding Context
Curcumin has self-affirmed GRAS status in the US for use as a food ingredient and colourant (21 CFR 73.600). In the EU, it is authorized as food colourant E100 with a revised ADI of 3 mg/kg bw/day (EFSA 2021 re-evaluation). As a dietary supplement ingredient, curcumin is marketed under DSHEA in the US and as a food supplement in the EU. In the EU, novel food status does not apply to traditional curcumin extracts but may apply to enhanced-bioavailability formulations. Buyers should confirm local classification (food ingredient, supplement, cosmetic active) before purchase.
> Alias Index
- IUPAC: (1E,6E)-1,7-bis(4-hydroxy-3-methoxyphenyl)hepta-1,6-diene-3,5-dione
- Common names: Curcumin, Diferuloylmethane, Turmeric Yellow, Natural Yellow 3
- CAS Number: 458-37-7
- EU food colourant: E100
- Related curcuminoids: Demethoxycurcumin (CAS 22608-11-3), Bisdemethoxycurcumin (CAS 33171-05-0)
- Source plant: Curcuma longa L. (Zingiberaceae)
- InChIKey: VFLDPWHFBUODDF-FCXRPNKRSA-N
- Commercial request terms: curcumin extract supplier, 95% curcuminoids, E100 natural colourant, turmeric extract bulk, CAS 458-37-7, TCS Industries Limited
> FAQ
What curcuminoid content grades are available?
TCS can source curcumin extract standardized to ≥90% or ≥95% total curcuminoids by HPLC. Custom specifications (e.g., specific curcumin I ratio, oil-soluble or water-dispersible forms) can be discussed at inquiry. Specify the target curcuminoid content and application at the time of request.
What documents are available for Curcumin orders?
COA and MSDS are standard for commercial discussions. COO, packing list, invoice and other import-support documents can be arranged according to order scope.
Do you supply Curcumin to Germany, France and Spain?
Yes. We support B2B buyers in Germany, France, Italy, Spain, the United Kingdom, the Netherlands, Poland and Switzerland, subject to route and document review.
Do you supply the United States, Canada and Australia?
Yes. We review the United States, Canada, Australia and New Zealand for project supply, import documents, packaging and logistics planning before quotation.
Does Curcumin require special storage conditions?
Curcumin is light-sensitive and degrades at alkaline pH. It should be stored at room temperature, protected from light, in sealed containers. Shelf life is batch-specific. Curcumin powder stains all contact surfaces; dedicated handling equipment or disposable liners are recommended.
Is curcumin extract classified as Novel Food in the EU?
Traditional curcumin extract from Curcuma longa is not classified as Novel Food in the EU. However, enhanced-bioavailability formulations (e.g., nano-curcumin, phytosome complexes) may fall under Novel Food Regulation (EU) 2015/2283 and require pre-market authorization. Buyers should verify classification for their specific product form.
Can you arrange samples before commercial purchasing?
Samples or evaluation quantities may be reviewed for qualified buyers after target specification, application and destination-market requirements are clarified.
How is Curcumin packaged for export?
Packaging is confirmed by quantity and material properties. Typical options include foil bags, HDPE containers, fibre drums, 25 kg bags or palletized export packaging.
Can buyer-defined specifications be reviewed?
Yes. Send the specification, methods, impurity limits and required documents. TCS can review feasibility before confirming quotation and lead time.
What payment terms are normally used?
Standard payment is 100% T/T before dispatch unless a different arrangement has been approved for an established commercial account.
What lead time should buyers expect?
Lead time depends on stock, batch size, document scope and destination. Available stock can move faster; made-to-order or pallet programs require longer planning.
What is the difference between curcumin and turmeric powder?
Turmeric powder is the ground whole rhizome of Curcuma longa, containing 2–5% curcuminoids along with starch, fiber, essential oils and minerals. Curcumin extract (CAS 458-37-7) is a purified preparation standardized to ≥90% or ≥95% curcuminoids. For supplement and food colouring applications, the extract is used; for culinary use, turmeric powder. Specify which form is needed at inquiry.
Last reviewed: June 2026
Evaluation and research orders (≤10 kg) are shipped with COA, MSDS, and certificate of origin. Bulk commercial orders (>10 kg) qualify for volume pricing with a full technical documentation package available on request.
> Request a Quote
If your team already has a target application, estimated quantity, destination market, or documentation requirements, send those details so the commercial response can be prepared more efficiently.