Page:NIOSH Manual of Analytical Methods - 2018.pdf/7

 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