Soft Chemicals has both flame retardant products SOFLAM C 3240 and SOFLAM VLS, certified as accepted ACPs (Active Chemical Products) by Oeko-Tex
Here you can find the link to the relevant website: https://www.oeko-tex.com/en/apply-here/active-chemical-products/accepted-acps?tx_solr%5Bq%5D=soft+chemicals
The two products can be sampled upon request.