Clariant launches Exolit AP 422 A — SVHC‑free ammonium polyphosphate
- Clariant introduced Exolit AP 422 A, an SVHC‑free ammonium polyphosphate flame retardant.
- Melamine was classified as an SVHC in 2023; Exolit AP 422 A contains less than 0.1% melamine and is SVHC‑free under REACH Article 31.
- The non‑halogenated formulation targets intumescent coatings, firestop sealing systems and PIR insulation panels.
- Early customers report retained fire protection performance and a market edge from improved chemical compliance and sustainability alignment.
Product overview
Exolit AP 422 A is presented as a next‑generation ammonium polyphosphate (APP) flame retardant and an SVHC‑free alternative to the existing Exolit AP 422. The formulation is non‑halogenated and intended for intumescent coatings, firestop sealing systems and PIR insulation panels.
Regulatory context
In 2023 melamine was classified as a Substance of Very High Concern. Exolit AP 422 A contains less than 0.1% melamine and is SVHC‑free according to Article 31 of the REACH Regulation, addressing current and anticipated regulatory challenges for manufacturers.
Performance and benefits
Clariant positions the composition as providing superior fire resistance across multiple applications while minimising hazardous emissions through its non‑halogenated chemistry. The product is cited as suitable where fire protection must align with evolving chemical regulations, including uses in building products and e‑mobility components such as charging points and circuit breakers.
Market feedback
Customers that have incorporated Exolit AP 422 A into firestop products report reliable fire protection performance and improved sustainability credentials, which they say give them a competitive advantage in offering safer, more compliant solutions.
Source: Clariant
