Zhang, Ben published the artcilePreparation of two kinds of polyaspartic acid grafted copolymers and their scale inhibition performance, SDS of cas: 116-63-2, the publication is Huaxue Yanjiu (2013), 24(4), 420-424, database is CAplus.
Grafted copolymers polyaspartic acid/diethylenetriamine(denoted as PASP/DETA) and polyaspartic acid/1-amino-2-naphthol-4-sulfonic acid(denoted as PASP/1, 2, 4) were synthesized with urea, maleic anhydride, diethylenetriamine and 1-amino-2-naphthol-4-sulfonic acid as the starting materials. The chem. structure of as-synthesized products was analyzed by IR spectrometry; and their scale inhibition performance in industrial water was tested. Results show that PASP/DETA possesses excellent scale inhibition performance against Ca3(PO4)2, and PASP/1, 2, 4possesses excellent scale inhibition performance against CaCO3. When PASP/DETA and PASP/1, 2, 4 are combined at a concentration of 5 mg/L and 1.5 mg/ L, they have a scale inhibition efficiency of 95.4% against CaCO3 and of 95.2% against Ca3(PO4)2.
Huaxue Yanjiu published new progress about 116-63-2. 116-63-2 belongs to naphthyridine, auxiliary class Sulfonic acid,Amine,Naphthalene,Alcohol,Organic Pigment, name is 4-Amino-3-hydroxynaphthalene-1-sulfonic acid, and the molecular formula is C3H6O2, SDS of cas: 116-63-2.
Referemce:
https://en.wikipedia.org/wiki/1,8-Naphthyridine,
1,8-Naphthyridine | C8H6N2 – PubChem