The label said non-toxic
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What conformance actually means
"Conforms to ASTM D-4236" says the formulation went to a toxicologist and the labeling follows from the advice. It is a statement about process. It does not assert that nothing in the bottle is harmful.
Where the contradiction appears
The rule says labeling shall not diminish the effect of required acute toxicity warnings. A prominent reassurance beside a mandated warning is doing exactly that, whatever the intention behind it.
And one requirement says the opposite outright
Where chronic hazard labeling applies, the label must carry a statement that such art materials are inappropriate for use by children, along with a US name, address and telephone number. A product cannot carry that and a family-friendly safety claim at once.
Certification marks are not the rule
The standard allows producers and repackagers to have compliance certified by a certifying organization, which is why seals exist. A seal is private certification layered on a legal obligation, and describing it as approval overstates it.
Children are a specific trap in this category
Art materials are bought for classrooms and for children, and the rule applies to users of any age and asks you to consider foreseeable misuse. A product that is genuinely suitable for children is a different formulation, not a different claim.
Check everything published, not just the bottle
Listings, the website, social posts and replies. The label gets reviewed and the rest does not, which is where unsupportable claims actually live. Same lesson as the detailing and sun properties, under a third statute.
The honest version sells fine
Lightfastness, pigment load, flow, coverage, the color index names of the pigments. Artists buy on those, they are all verifiable, and none of them is a claim about toxicity.