... textile grade Appearance: colorless transparent liquid Purity: 90% Application: in rubber, textile,printing I Formic acid leather grade 1. FORMIC ACID FEED GRADE ... Age resister, etc. 4 Leather industryTanning, etc. 5 Textile industryNatural Rubber. 6 Rubber industryCoagulation, etc. 7 Steel ... they're professional.FORMIC ACID FEED GRADE (BV Certification main product) Formic acid textile grade 85% 90%