BENZENESULFONIC ACID, 5-[(2-HYDROXY-1-NAPHTHALENYL)AZO]-2-METHYL-, BARIUM SALT (2:1) CAS:129212-12-0 BENZENESULFONIC ACID,HYDROXY-,POLYMER WITH FORMALDEHYDE,PHENOL AND UREA,AMMONIUM SALT CAS:67893-17-8 |