3913900030
- Natural polymers (for example, alginic acid) and modified natural polymers (for example, hardened proteins, chemical derivatives of natural rubber), not elsewhere specified or included, in primary forms
- Other
- Protein, chemically or enzymatically modified by carboxylation and/or phthalic acid addition, whether or not hydrolysed, having a weight average molecular weight (Mw) of less than 350 000