... low molecular weight polymeride, with average molecular weight 400-800. No toxicity, soluble in water, CAS No. 26099-09-2Structural ... a low molecular weight polymeride, with average molecular weight 400-800. No toxicity, soluble in water, high chemical and ... Safety Protection:Acidity, Avoid contact with eye and skin, once contacted, flush with water. Good quality in China-Polymeric Anhydride (HPMA)