Table 2.

Molecular weight, Mw (g/mol), the polydispersity index, Ip and sulfur content, S (wt%) of GY785 DR and GY785 DRS obtained after sulfation carried out at different temperatures.

Derivative	Temp. (°C)	$\stackrel{\mathrm{-}}{\text{Mw}}$ (g/mol)	Ip	S* (wt%)	S** (wt%)
GY785 DR	—	7,500	1.1	3.4	3.0
GY785 DRS	65	9,000	1.1	8.2	7.6
	70	11,000	1.1	9.7	10.4
	90	10,500	1.1	11.2	11.1
	120	8,000	1.3	10.7	10.1

^*Determined by the elemental analysis.

^**Determined by HPAEC method.