Is Sherwin-Williams A-100 Exterior Fast Dry Stain Blocking Alkyd Wood Primer toxic?

No paint is risk-free, and "toxic" depends on how much you're exposed to and for how long. Here is what Sherwin-Williams's own documents show. Sherwin-Williams A-100 Exterior Fast Dry Stain Blocking Alkyd Wood Primer isn't scored yet, because the maker hasn't published every document we need. Its untinted VOC is 338 g/L. Its Safety Data Sheet lists no hazard classifications. We found no third-party emissions testing for it.

Health score

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VOC g/L

338

Use

Exterior primer

Safety Data Sheet warnings

None. The Safety Data Sheet lists no hazard classifications.

Evidence beyond the label

• Emissions testing: none found
• Health certification: none found
• Full ingredient list (Health Product Declaration): not published

Product

• WhiteVOC 338 g/L · 0 warnings—Not enough data

Updated October 12, 2026. Scores summarize the evidence makers publish. They don't guarantee safety or predict individual health outcomes. No brand pays to be listed. How we score