Adam's Polishes Car Wash Shampoo

Yes — the SDS confirms a concentrate pH of 7–7.8, and at the recommended 1:128 working dilution the solution approaches neutral. Adam's Polishes markets the product as 'Does not remove existing protection,' consistent with the near-neutral pH chemistry. No documented wax or sealant stripping at normal wash concentration.

Yes. SDS Section 15 (revision November 2024) explicitly discloses two Prop 65-listed substances: ethylene oxide at 0.000031% and 1,4-dioxane at 0.000082%. Both are trace impurities from the ethoxylation process used to manufacture the surfactant — a common occurrence in ethoxylated sulfate-based cleaners. These concentrations are extremely low; however, the SDS §15 disclosure means Prop 65 reporting requirements apply, and the product warrants a Prop 65 warning.

The standard two-bucket wash ratio is 1:128 — approximately 1 oz per gallon of water. For foam cannon use, a thicker mix (around 1:16 to 1:32) is commonly reported in foam-cannon use threads, though Adam's labels typically show 1–3 oz per gallon. Scoring and health/environment assessments for this review are based on the 1:128 two-bucket-wash dilution.

Both are mainstream enthusiast-grade shampoos with similar WARNING signal words and no EPA Safer Choice certification. Adam's has strong user support for lather volume and suds lubricity, particularly from foam cannon users. Meguiar's Gold Class is a longer-established market presence with broader retail availability. Adam's SDS is recent (November 2024) and provides granular ingredient disclosure including named surfactants with concentration ranges.

The Amazon listing includes the marketing claim 'safe and biodegradable,' but SDS Section 12.2 (Persistence and Degradability) states 'Data are not available' for the product mixture. No biodegradability credit is applied — SDS Section 12 reports no confirmatory data for the mixture. The claim on the listing is unverified marketing copy and is not supported by the SDS.

H412 (harmful to aquatic life with long-lasting effects — Chronic Aquatic Category 3) is confirmed by SDS Section 12 qualitative language. The ingredient data in §12 includes fish LC50 and invertebrate EC50 values. Rinse water should not be directed to storm drains where avoidable; dispose of wash water into a drain connected to a sanitary sewer or wash on a lawn where it can filter through soil.