Bilt Hamber Auto-Wheel Active Wheel Cleaner

The Amazon listing confirms safe on alloy, aluminum, and steel wheels, and SDS §9 pH of 5.5·7.0 confirms neutral chemistry. The brand does not explicitly call out polished aluminum, chrome, anodized, ceramic-coated, or PPF-wrapped wheels in the listing copy, so test on a small area for those surface types before full application.

Sodium mercaptoacetate (the Track A iron-reactive active in SDS §3) chelates dissolved iron from brake-dust particles, forming a deep-red to burgundy iron-mercaptoacetate complex. The color change is a real chemistry signal: when no further iron is available to react, the bleed stops. This is the documented dwell-completion indicator for the category.

H319 (serious eye irritation Cat 2A) and H317 (skin sensitizer) in SDS §2 mean eye protection and chemical-resistant gloves are recommended at wheel-height spray posture where face-level mist is a real exposure pathway. SDS §8 specifies nitrile (NBR) gloves at 0.4 mm thickness (EN 374 Level 6, 480-minute breakthrough). The SDS explicitly states respiratory protection is not required in normal cases.

No. SDS §9 confirms pH 5.5·7.0, which is neutral. The active iron-reactive ingredient is sodium mercaptoacetate (a thioglycolate salt at 10·30%), not phosphoric or hydrofluoric acid. Bilt Hamber markets the product as 'non-acid, non-alkaline' on the Amazon listing, which is corroborated by the SDS pH data.

SDS §12.2 explicitly states the surfactants in the product meet the EU Detergent Regulation (EC/648/2004) requirement for ultimate biodegradability. Sodium mercaptoacetate measured 67% biodegradation at 28 days (OECD 301d) and the fatty alcohol sulfate co-surfactant measured >60% (OECD 301). Mixture-level ecotoxicological data is not available in the SDS, so aquatic toxicity is tracked as unknown.