Table 2.

Water content (with combined standard uncertainty) as a function of storage time at 100 % relative humidity (RH). Nominally negative water concentrations can be observed due to the blank subtraction procedure, but negative results were always less than the measurement uncertainty.

Compound name	Days at 100% RH	water (mg/kg)
benzoic acid *	0	7 ± 22
	2	12 ± 24
	7	33 ± 17
	35	29 ± 9
	77	16 ± 6
dimethyl sulfone	0	824 ± 28
	2	14692 ± 3073
	7	74531 ± 1351
	35	249620 ± 20347
	77	NA ‡
1,3,5-trimethoxybenzene †	0	518 ± 27
	2	498 ± 23
	7	572 ± 16
	35	660 ± 24
	77	698 ± 13
1,2,4,5-tetramethylbenzene	0	106 ± 42
	2	149 ± 35
	7	116 ± 17
	35	135 ± 22
	77	111 ± 35
acetanilide (99 % purity)	0	1 ± 9
	8	213 ± 9
	31	383 ± 8
	64	494 ± 12
	476	772 ± 9
acetanilide (sublimed, 99.9 % purity)	0	−1 ± 9
	8	0 ± 4
	31	0 ± 6
	64	2 ± 2
	476	4 ± 8
1,3,5-trimethoxybenzene †	0	358 ± 13
	8	415 ± 6
	31	481 ± 8
	64	557 ± 4
	476	1028 ± 12
dimethyl terephthalate	0	−35 ± 76
	8	−2 ± 48
	31	81 ± 55
	64	28 ± 95
	476	81 ± 84

^*NIST Standard Reference Material 39j

^†Same container of material used for duplicate tests

^‡Liquid and solid phases present; no measurement made