SILYBUM MARIANUM SEED OIL- ▸ Dietary supplement ingredient: Standardized botanical extract used in supplement formulations.
- ▸ Cosmetic skin conditioning: Functions as a skin-conditioning ingredient in cosmetic formulations.
- ▸ Standardized actives: Supplies a defined silymarin flavonolignan complex for formulation.
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →Milk thistle extract (CAS 84604-20-6) is a botanical extract of Silybum marianum standardized to a silymarin flavonolignan content (commonly 80%). It is supplied as a dietary supplement ingredient and is used in cosmetic formulations as a skin-conditioning agent.
Regulatory & registration requirements
- TSCA (US): Not found on the public (non-confidential) TSCA Inventory
- REACH (EU):
- EC number: 283-298-7
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Frequently Asked Questions
What is Milk Thistle 80%?
Milk Thistle 80% (CAS 84604-20-6) is a botanical extract of Silybum marianum standardized to roughly 80% silymarin flavonolignan content. It is supplied as a dietary-supplement ingredient and as a skin-conditioning ingredient for cosmetic formulations.
What does the 80% in Milk Thistle 80% refer to?
The 80% denotes the standardized silymarin flavonolignan content of the extract, the defined active complex measured by assay. Standardizing to a fixed silymarin level lets formulators dose a consistent active load across batches.
What is milk thistle extract used for in formulation?
It is used as a standardized botanical active in dietary-supplement formulations and as a skin-conditioning ingredient in cosmetics. RawSource supplies it as a defined silymarin flavonolignan complex for these formulation uses.
What grades and forms of milk thistle extract are available?
Milk thistle extract is commonly supplied as a powder standardized to a silymarin percentage (such as 80%); other standardization levels exist depending on the source. Specify your required silymarin assay and form, and request a CoA and SDS to confirm the supplied specification.
How is bulk milk thistle extract packaged and ordered?
RawSource supplies standardized botanical extracts in bulk packaging such as drums and bags to supplement and cosmetic manufacturers. Pricing depends on standardization level and volume, so submit a bulk quote with your target silymarin assay and quantity rather than relying on a list price.
What is the REACH and TSCA regulatory status of Milk Thistle Extract (Silymarin)?
Milk Thistle Extract (Silymarin) (CAS 84604-20-6) is recorded as REACH-registered in ECHA's public CHEM database (EC 283-298-7); it was not found on EPA's public (non-confidential) TSCA Inventory file.