Zirconium pretreatment formulations

Identity and scope

Henkel’s zirconium-based M-NT 1 and M-NT 2011 TDSs report pH 1.9 and 1.2, respectively, on 100% product. The M-NT 1 TDS prints a density entry of 1.01 at 20 °C without a unit. Its Ireland pail is IDH 2564026. M-NT 1 TDS M-NT 2011 TDS Henkel M-NT 1, Ireland

Supplied product, working bath and deposited film have separate measurements. Zirconia ceramics and zirconium raw salts have separate material identities.

Named products and technology families

Synthesis. "Thin film," "nanoceramic," and "multi-metal" describe technology or intended application. They do not establish one film composition, thickness, mass per area, metal ratio, or universally compatible alloy list. The public Chemetall pages direct customers to separate TDS and SDS access. Family claims cannot fill those grade-specific gaps.

Supplied-liquid measurements

These entries retain the source's sample basis and labels. They are descriptive product data, not bath operating targets.

Synthesis. The M-NT 1 documents report different pH values under different identifiers and document scopes. They do not establish the cause. Averaging them would invent a specification. Relative density is dimensionless and requires a reference basis. A density in g/cm³ is mass per volume. The ambiguous SDS label cannot silently become a fully defined specific-gravity test.

The M-NT 2011 TDS also contains conflicting shelf-life statements. Page 1 says two years, while page 2 lists 36 months in unopened original packaging. This unresolved difference prevents one unqualified shelf-life value. M-NT 2011 TDS, pages 1 to 2

Ingredient disclosure and material state

The Canadian M-NT 1 SDS names hexafluorozirconic acid, CAS 12021-95-3, at 0.1 to 1 weight percent. Its footnote says exact percentages may vary or be trade secret. This is a hazardous-component disclosure, not the complete formula or elemental-zirconium assay. SDS, section 3 and footnote

Synthesis. The named acid establishes a disclosed zirconium- and fluorine-containing constituent in that product. It establishes neither free-fluoride concentration nor the chemical phases in a deposited film. Oxsilan's zirconium-and-silane description and Gardobond X's zirconium-and-titanium description establish different family chemistries. They do not prove those constituents are present in either Henkel grade.

The M-NT 1 TDS describes a reagent-treated analytical sample measured by a HACH Pocket Colorimeter II at 450 nm, with a correction factor. Its reported absorbance is method-dependent, not a direct weight percentage or film measurement. M-NT 1 TDS, page 2

Synthesis. Supplied concentrate is the delivered liquid. A working bath contains diluted product and process additions. A used bath additionally reflects its operating history. A reagent-treated analytical sample is another material state. The conversion film is the deposited layer. Values cannot transfer between these states without a defined relationship. Film mass per area in mg/m² also differs from thickness in nm. Conversion between them requires film composition, density, and coverage assumptions. No numerical film thickness or coating mass is established here for the two Henkel grades.

Performance and absence claims

Henkel's M-NT 1 product page claims phosphate freedom, absence of volatile organic components, and compatibility with all paint types. These remain manufacturer statements. The page supplies no detection limits or alloy-by-paint qualification matrix. M-NT 1 product description

The M-NT 1 TDS says corrosion resistance normally improves relative to iron phosphating, while describing applications with limited exposure to corrosive conditions. It gives no comparative test dataset. M-NT 1 TDS, page 1 Chemetall claims Oxsilan protection comparable to zinc phosphating, without a named grade, paint system, or test matrix on that page. Oxsilan

PPG claims ZIRCOBOND reduces sludge by at least 80% relative to zinc-phosphate products. The same page's image description uses "up to 80%." This wording difference and the missing measurement basis preclude one universal reduction factor. Neither statement measures corrosion performance. PPG pretreatment page

The Canadian SDS reports VOC content as unavailable. It also combines a not-classified designation with fluoride-related effects in section 11. Neither absence language nor classification establishes that the product is harmless. SDS, sections 2, 9, and 11

Synthesis. "Phosphate-free," "nickel-free," "chromium-free," or "VOC-free" requires the named maker's exact product and claim scope. Omitted ingredients are not analytical zeros or current-lot absence certificates. Corrosion and adhesion comparisons depend on the metal, cleaning, pretreatment, paint, cure, exposure, and evaluation method. These sources establish no universal ranking, service lifetime, customer approval, or transferable qualification.

DLA's public ASTM B117 record describes the scope as the apparatus and conditions for a salt-fog environment. That scope alone supplies no product acceptance criterion or conversion from exposure hours to years in service. No paid standard requirements are reproduced. DLA public B117 record

Source versions and coverage limits

Reviewed October 30, 2026 PDT. The Henkel en_GL sheets are dated March 2025 for M-NT 1 and April 2024 for M-NT 2011. Their PDF generation marks are later than those technical dates. The Canadian SDS prints issue date 05/06/2025 and revision 009.0 for IDH 893767. Its region differs from the Ireland page's IDH 2564026. These are separate document scopes, not verified interchangeable formulations. M-NT 1 TDS, M-NT 2011 TDS, Canadian SDS

The cited TDS tables, footnotes, analytical sections, and disclaimers and all SDS sections were reviewed. The live Chemetall, Henkel, and PPG pages are undated snapshots. Coverage excludes complete proprietary formulations, lot analyses, customer-specific conditions, independent comparative paint tests, and grade-specific film measurements. No grade-specific M-NT 2011 SDS was established here. Process recipes and operating targets are outside this reference.

Related references

Surface-finishing processes provides the broader process context. Zirconia-alumina abrasive concerns oxide grain rather than conversion pretreatment liquid. These related files have separate publication status.