ALIPHATIC ALDEHYD ES: METHO D 2018, Issue 1, dated 15 March 2003 - page 7 of 10 [15] [16]
Sa x’s Dange rous Properties of In dus trial Ma terials [2000 ]. Vol. 3, 10th ed., Lewis RJ sr, ed., John W iley & Sons, Inc., New York. Handbook of T oxic and Hazardo us C hem icals and C arcinogens [1991]. Vol. 2, S ittig M, ed., GZ Noyes Publications, Park Ridge, NJ, p. 1633.
METHOD DEVELOPED BY: Samuel P. Tucker, Ph.D., NIOSH/DART
TABLE 1. PROPERTIES AND OTHER INFORMATION Compound
Formula
CAS
RTECS
MW
Density @ 20 o C (g/mL) a
CH3 -CHO
75-07-0
AB1925000
44.05
0.788
20.8
51:49
propionaldehyde
CH3 -CH2 -CHO
123-38-6
UE0350000
58.09
0.807
49
54:46
valeraldehyde
CH3 -(CH2 )3 -CHO
110-62-3
YV3600000
86.13
0.8095
102
66:34
590-86-3
ES3450000
86.13
0.803
90
66:34
CH3
b
Mobile Phase Percentages of Acetonitrile and Water (v/v)
acetaldehyde
isovaleraldehyde a
BP (o C)
l
CH3 -CH-CH2 -CHO
b
Density of acetaldehyde at 16 oC The temp erature for this density of isovaleraldehyde was not spe cified but is assumed to be room temperature.
TABLE 2. EXPOSURE LIMITS AND CONVER SION FACTORS. Expo sure Lim its Compound
acetaldehyde propionaldehyde valeraldehyde isovaleraldehyde
Conversion Factor ppm to m g/m 3 @ NTP
OSHA REL
NIOSH PEL
ACG IH TLV
(ppm)
(ppm)
(ppm)
200
lowest feasible level
25 ppm (ceiling)
1 pp m = 1.80 m g/m 3
none
none
none
1 pp m = 2.38 m g/m 3
50
50
50
1 pp m = 3.52 m g/m 3
none
none
none
1 pp m = 3.52 m g/m 3
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition
