
Test methods of purified terephthalic acid (PTA) for industrial use—Part 5Determination of acid number
NORMA vydána dne 2.12.2025
Designation standards: GB/T 30921.5-2025
Note: K dispozici od: červenec 2026
Publication date standards: 2.12.2025
Country: Chinese technical standard
Kategorie: Technické normy GB