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Saturday, 06 August 2011 02:44

Aldehydes & Ketals: Physical & Chemical Properties

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Chemical Name

CAS-Number

Colour/Form

Boiling Point (ºC)

Melting Point (ºC)

Molecular Weight

Solubility in Water

Relative Density (water=1)

Relative Vapour Density (air=1)

Vapour Pressure/ (Kpa)

Inflam.
Limits

Flash Point (ºC)

Auto Ignition Point (ºC)

ACETAL
105-57-7

colourless liquid

102.2

-100

118.17

sol

0.83

4.08

20 mm Hg

1.6 ll
10.4 ul

-21 cc

230

ACETALDEHYDE
75-07-0

colourless liquid; colourless gas

21

-123

44.05

misc

@ 16 ºC/4 ºC

1.52

99

4 ll
57 ul

-39

185

ACROLEIN
107-02-8

colourless or yellowish liquid

53

-88

56.06

v sol

0.84

1.94

29

2.8 ll
31 ul

-26 cc

234

BENZALDEHYDE
100-52-7

colourless liquid

179

-26

106.12

sl sol

@ 15 ºC/4 ºC

3.66

@ 26 ºC

63 cc

179

BUTYLALDEHYDE
123-72-8

colourless liquid; water-white liquid

74.8

-99

72.10

sol

0.8

2.5

12.2

1.9 ll
12.5 ul

-667 cc

230

CHLOROACETALDE­HYDE
107-20-0

clear, colourless liquid

85.5

-16.3

78.50

misc

1.19

2.7

13.3

877 cc

88

CHLORAL
75-87-6

oily liq

@ 760 mm Hg

-57.5

147.40

sol

@ 20 ° C/4 ° C

5.1

@ 20 ° C

CHLORAL HYDRATE
302-17-0

transparent, colorless crystals; large monoclinic plates; colorless or white crystals

@ 764 mm Hg (decomp)

57 ° C

165.42

14.3 g/ml water at 40 ° C

@ 20 ° C/4 ° C

o-CHOROBENZALDE­HYDE
89-98-5

colourless to yellowish liquid

211.9

12.4

140.6

sl sol

1.2483

0.04

90 cc

385

CINNAMMICALDEHYDE
104-55-2

yellowish oily liquid; greenish-yellow liquid

253

-7.5

132.15

700 ml

@ 25 ºC/ 25 ºC

4.6

@ 76 ºC

120

CROTONALDEHYDE
4170-30-3

water-white to straw-coloured liquid

104.0

-76.5

70.09

18.1 g/100 g

0.853

2.41

19 mm Hg

2.1 ll
15.5 ul

13 oc

232.2

DICHLOROETHYL FORMAL
111-91-1

colorless liquid

218.1

-32.8

173.05

@ 25 ° C

@ 20 ° C/20 ° C

6.0

@ 20 ° C

110 ° C

2,2-DIMETHYL-1,3-DIOXO­LANE-4-METHANOL
100-79-8

colourless liquid

188-189

-26.4

132.2

misc

1.064

4.6

80 cc

DIMETHYLACETAL
534-15-6

colourless liquid; mobile liquid

64.5

-113

90.1

sol

0.85015

3.1

61 mm Hg

p-DIOXANE
123-91-1

colourless liquid

101.0

11.8

88.10

misc

1.0337

3.03

4.1

2.0 ll
22 ul

12

180

ETHYLHEXALDEHYDE
123-05-7

colourless liquid

163

-76

128.22

insol

0.8540

4.4

0.2

@ 93 ºC, ll

50-52

190-210

FORMALDEHYDE
50-00-0

clear, water-white, very slightly acid, gas or liquid.; formaldehyde solution is a clear, colourless or nearly colourless liquid .

-19.5

-92

30.03

sol

0.8

1.08

7.0 ll
73 ul

flammable gas

300

GLUTARALDEHYDE
111-30-8

colourless liquid

187-189

-14

100.13

sol

0.72

3.4

17 mm Hg

GLYCIDALDEHYDE
765-34-4

colourless liquid

112-113

-62

72.1

misc

1.1403

2.58

@t 25 ºC

3-HYDROXYBUTYRALDEHYDE
107-89-1

clear, white to yellow syrupy liquid; colourless thick liquid

83

88.10

misc

1.103

3.00

21 mm Hg

ISOBUTYLALDEHYDE
78-84-2

transparent, colourless liquid

64.5

-65.9

72.10

sol

0.7938

2.48

@ 25 ºC

1.6 ll
10.6 ul

196

METALDEHYDE
108-62-3

110

47

176.21

METHYLAL
109-87-5

colourless, clear liquid

42

-105

76.09

sol

0.8593

2.6

44

1.6 ll
17.6 ul

-18 oc

237

4-MORPHOLINECAR­BOXYALDEHYDE
4394-85-8

236.5

115.13

PARAFORMALDEHYDE
30525-89-4

white crystalline powder; white, amorphous powder

155-170

variable polymer

sl sol

@ 15 ºC (solid)

@ 25 ºC

7.0 ll
73.0 ul

71 cc

300

PARALDEHYDE
123-63-7

colourless, transparent liquid

124

12.6

132.16

sl sol

0.9943

4.5

25.3 mm Hg

1.3 ll
? ul

PROPANAL
123-38-6

colourless liquid

49

-81

58.08

sol

@ 25 ºC

2.0

31.3

2.6 ll
16.1 ul

-30

207

SAFROLE
94-59-7

colourless or pale yellow oil; monoclinic crystals

234.5

11.2

162.18

insol

1.1

@ 63.8 ºC

97

TRIOXANE
110-88-3

crystalline solid; rhombic needles from ether; white

114.5

64

90.08

v sol

@ 65 ºC

45

VALERALDEHYDE
110-62-3

colourless liquid

103

-91.5

86.13

sl sol

0.8095

3.0

@ 25 ºC

 

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Part I. The Body
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Part III. Management & Policy
Part IV. Tools and Approaches
Part V. Psychosocial and Organizational Factors
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Part XV. Transport Industries
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Part XVII. Services and Trade
Part XVIII. Guides