How are heavy metals and pesticide residues controlled in this cinnamon bark oil?
Heavy metals and pesticide residues are controlled through raw material screening plus finished-batch testing. Cassia bark is a low-risk crop, but we still verify every batch so you can safely use the oil in food, cosmetics and pharmaceuticals.
Heavy Metal Limits (typical)
| Metal | Limit | Method |
|---|---|---|
| Lead (Pb) | ≤10 mg/kg | ICP-MS / AAS |
| Arsenic (As) | ≤2 mg/kg | ICP-MS / AAS |
| Cadmium (Cd) | ≤1 mg/kg | ICP-MS / AAS |
| Mercury (Hg) | ≤0.1 mg/kg | ICP-MS / AAS |
| Heavy metals (qualitative) | Negative | FCC / ChP sulfide precipitation |
Pesticide Residues
| Item | Approach |
|---|---|
| Multi-residue screen | GC-MS/MS + LC-MS/MS multi-residue scan on raw bark & oil |
| Compliance reference | EU MRLs (EC 396/2005), GB 2763 (China), USP/EP limits |
| Typical result | Below detection or far below MRL |
- Raw bark from Guangxi/Guangdong is sourced from managed plantations and screened for unauthorized pesticides before distillation
- Because steam distillation transfers only volatile compounds, non-volatile pesticides remain in the bark and water phase, giving the oil an additional natural safety margin
- Specific target tests (e.g. coumarin content, PAH) can be added for pharma or EU cosmetics use
- Heavy metal and pesticide results are printed on the COA for each batch
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บทความนี้เผยแพร่เมื่อ 2026-09-07 และอัปเดตล่าสุดเมื่อ 2026-09-07 โดยจะมีการปรับปรุงเนื้อหาอย่างต่อเนื่อง
