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McKee's 37

Xtreme Iron Remover

thioglycolate-basediron-reactivecolor-changingdanger-labelready-to-usewheel-safe

Best Value

$1.36/oz

A thioglycolate-based iron remover designed for removing ferrous contamination from paint and wheels on all vehicle types.

Key Chemistry

pH Level

5.0

Active Mechanism

thioglycolate chelation

Surfactants

1 (anionic)

Expert Analysis

The disclosed chemistry centers on sodium mercaptoacetate as the primary iron chelator at a substantial 25-30% concentration, working at a mildly acidic pH of 5 to dissolve iron particles through chemical reaction. The thioglycolate approach provides the characteristic color-changing reaction that signals active iron removal, supported by anionic surfactants for cleaning and surface wetting.

Key Differentiators

  • High concentration sodium mercaptoacetate at 25-30% for aggressive iron removal
  • Formulated at pH 5 for effective iron chelation while remaining acid-free by traditional standards

Potential Concerns

  • Danger signal word indicates significant safety hazards requiring careful handling and PPE
  • Partial ingredient disclosure limits full understanding of formulation interactions and potential sensitivities

Ingredients

3 disclosed
sodium mercaptoacetate25 – 30
CAS: 367-51-1iron removal agent
sodium xylenesulfonate5 – 8
CAS: 1300-72-7surfactant
butyl glycolether2 – 3
CAS: 111-76-2solvent

Source: sds only

Safety Profile

Signal Word
Danger
Eye Hazard
Causes serious eye irritation
Skin Hazard
May cause an allergic skin reaction
Corrosive to Metals
Yes
Flammable
Yes