Sustainable Chemical Processes

Table 7 Acid values for rubber seeds, RSO and RSOEE

From: The influence of storage time on relevant product properties of rubber seeds, rubber seed oil and rubber seed oil ethyl esters

Material	Acid value (mg KOH/g)		Relative increase
Material	Initial	Final	(%)
Rubber seed
NPT^a	0.8	4.2	425
PT^a	0.5	2.1	320
Entry 1 (Table 1)^b	2	8.6	330
Entry 2 (Table 1)^b	2	30.8	1440
Oil
RSO^a	0.52	0.6	15
RSO^b	18.1	31	71
Biodiesel
RSO ethyl ester^a	0.32	0.33	3
Rapeseed methyl ester^c	0.15	0.22	47

^aThis study, after 2 months storage
^bZhu et al. after 2 months storage [15]
^cLeung et al. after 12 months storage [16]

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