What it is: California’s Proposition 65 is a state law that deals with warnings about exposure to chemicals the state has listed. Short answer for buyers: a warning on a product or in a quote does not by itself tell you how risky the product is, or whether your own shipments need one. This is a general explanation only. I did not verify the current list or any rule, and I name no specific substance as listed or not listed. Please verify it yourself with California’s Office of Environmental Health Hazard Assessment (OEHHA) and a qualified adviser.
What you may see
What you may see
- A warning on a box, in a catalog, on a website or in a shipping document.
- A supplier’s request for your ship-to state.
- A distributor adding a warning to everything as a precaution.
Why a carbide product could prompt a question
Why a carbide product could prompt a question
Hard-metal products are made from several materials, and some businesses add warnings out of caution when they are unsure about a component. Whether any material in a given product falls under the law depends on the list at the time and on how people are exposed. I cannot tell you that for your product.
Questions to ask
Questions to ask
| To whom | Question |
|---|---|
| Supplier | Why does this product or quote carry a warning, and is it based on a specific listed substance? |
| Supplier | Do you hold any test or composition information you can share? |
| Your adviser | Do we need to warn if we ship this to California, and who is responsible? |
| Your distributor or marketplace | What warning text and format do they require from us? |
Practical steps
Practical steps
- Record every warning you receive and the product it relates to.
- Ask your supplier to explain it in writing.
- Ask a qualified adviser what applies to your business type and size.
- Decide on a consistent practice and apply it to every product and channel.
What not to do
Warning obligations are legal, so the safe move is always the documented one.
- Copying another company’s warning text. It describes their product and their assessment, not yours.
- Removing a supplier’s warning from packaging. That can move the obligation onto you.
- Assuming no warning means no obligation. The absence of a label is not a finding.
Query date: October 24, 2026. I could not retrieve the OEHHA pages for this article, so none are cited; rules and lists change.
Boundary: general information, not legal advice. No list entry, threshold or deadline is stated; verify with OEHHA and a qualified adviser.
Further reading on this site.
SENTHAI Carbide Tool: Company Identity, Factory and Product Scope ↗A crack appeared after off-season storage. How do we distinguish discovery date from failure date? ↗Tungsten carbide inserts for snow plow edges ↗Standard Carbide-Blade Specs: What Clear Roads Project 17-02 Set Out to Do ↗Metric 8.8 vs 10.9 on Plow Edges: Strength, Hardness and Brittleness Trade-Offs ↗EN 10204 Type 2.2 vs 3.1: Which Certificate Do You Actually Need for Edge Steel? ↗
