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Data bank of environmental chemicals     |     The Finnish Environment Institute (SYKE)
 


21.10.2019

Data bank of environmental properties of chemicals


Chemical
Butylaldehyde
CAS-number :
123-72-8
 
Synonyms :
1-butanal
Butanal
butyraldehyde
butyric aldehyde.
Butyylialdehydi
 
Sumformula of the chemical :
C4H8O
EINECS-number :
2046466
 
Odor :
Characteristic; sweet, rancid.

Hedonic tone: unpleasant.

Threshold Odour Concentration:
absolute perception limit: <0.0046 ppm
50 % recognition: 0.0092 ppm
100 % recognition: 0.039 ppm
Odour Index: 2984615
(Hellmann & Small 1974).

Threshold Odour Concentration:
recognition: 0.013 - 0.014 mg/m3
15 mg/m3
0.042 mg/m3
(Verschueren 1983).
 
Molecular weight :
72.1
 
Spesicif gravity (water=1) :
0.817  at 20/4 °C
 
Vapor density (air=1) :
2.48 
 
Conversion factor, 1 ppm in air=_mg/m3 :
2.9  mg/m3
 
Conversion factor, 1 mg/m3 in air=_ppm :
0.34  ppm
 
Vapor pressure, mmHg :
71  20 °C
 
Water solubility, mg/l :
37000 
71000 
200  MITI 1992
 
Melting point, °C :
-97  -97/-99 °C
-99 
-99  MITI 1992
 
Boiling point, °C :
75  75 - 76 °C
76 
74.8  MITI 1992
 
Log octanol/water coefficient, log Pow :
1.18 
0.88  Sangster 1989
 
Photochemical degradation in air :
Photooxidation half-life in air:
28hr - 2.8hr, based upon measured reaction rate constant with 
.OH in air (Howard 1991).
 
Photochemical degradation in water :
Photoocidation half-life in water:
19yr - 114d, based upon measured reaction rate constant with 
.OH in water (Howard 1991).
 
Half-life in air, days :
1.16  28hr - 2.8hr,
0.12  based upon measured photooxidation half-lives in air.
  Howard 1991
 
Half-life in soil, days :
7d - 1d,
scientific judgement based upon estimated aqueous aerobic biodegradation half-lives.
  Howard 1991
 
Half-life in water, days :
7d - 1d,
in surface water: scientific judgement based upon estimated aqueous aerobic biodegradation half-lives.
14  14d - 2d,
in ground water: scientific judgement based upon estimated aqueous aerobic buodegradation half-lives.
  Howard 1991
 
Aerobic degradation in water :
Aerobic half-life:
7d - 1d, scientific judgement based upon aerobic biological 
screening test data (Howard 1991).
 
Anaerobic degradation in water :
Anaerobic half-life:
28d - 4d, scientific judgement based upon estimated aqueous 
aerobic biodegradation half-lives (Howard 1991).
 
Total degradation in water :
Biodegradation:
100% by BOD
period: 14d
substance: 100 mg/l
sludge: 30 mg/l
(MITI 1992)
 
Ready biodegradability :
Confirmed to be biodegradable (Anon. 1987).
 
LD50 values to mammals in oral exposure, mg/kg :
5900  orl-rat, Patty 1967
 
LC50 values to mammals in inhalation exposure, ppm :
60000  ihl-rat, 0.5 hr, Verschueren 1983
 
Other information of mammals :
Rat: inhalation: no effect: 1000 ppm, 12 x 6 hr (Cage 1970).
 
Effects on microorganisms :
Toxicity threshold (cell multiplication inhibition test):
bacteria (Pseudomonas putida): 100 mg/l
(Bringmann & Kühn 1980a).
 
LOEC values to algae, mg/l :
19  rpd, schr, Microcystis aeruginosa,
  Bringmann & Kühn 1976
 
LC50 values to fishes, mg/l :
25.8  srv, act, 96 hr, Pimephales promelas,
  Curtis & Ward 1981
  --
16  96 hr, Pimephales promelas
13.4  96 hr, Pimephales promelas, Brooke et al. 1984
 
EC50 values to fishes, mg/l :
16  96 hr, mbt, Pimephales promelas
13.4  96 hr, mbt, Pimephales promelas, Brooke et al. 1984
 
Other information of water organisms :
Toxicity threshold (cell multiplication inhibition test):
algae (Microcystis aeruginosa): 19 mg/l
(Bringmann & Kühn 1976)
green algae (Scenedesmus quadricauda): 83 mg/l
protozoa (Entosiphon sulcatum): 4.2 mg/l
protozoa (Uronema parduczi): 98 mg/l
(Bringmann & Kühn 1980a).
 
Other effects on aquatic ecosystems :
Reduction of amenities:
Threshold Odour Concentration: 0.009 mg/l
Detection: 0.0373 mg/kg
(Verschueren 1983).

References
1848Anon. 1987a. The list of the existing chemical substances tested on biodegradability by microorganisms or bioaccumulation in fish body by Chemicals Inspection & Testing Institute. Ministry of International Trade and Industry, MITI. Japan.
187Bringmann, G. & Kühn, R. 1976. Vergleichende Befunde der Schadwirkung wassergefährdender Stoffe gegen Bakterien (Pseudomonas putida) und Blaualgen (Microcystis aeruginosa). Gwf-Wasser-Abwasser 117(9).
188Bringmann, G. & Kühn, R. 1980a. Comparison of the toxicity thresholds of water pollutants to bacteria, algae and protozoa in the cell multiplication inhibition test. Water Res. 14: 231 - 241.
189Bringmann, G. & Kühn, R. 1980b. Bestimmung der biologischen Schadwirkung wassergefahrdender Stoffe gegen Protozoen. II. Bakterienfressende Ciliaten, Z. Wasser/Abwasser Forsch. 1: 26 - 31.
3295Brooke, L. T. et al. 1984. Acute toxicities of organic chemicals to fathead minnows (Pimephales promelas); Vol 1. Center for Lake Superior Environmental Studies University of Wisconsin-Superior, Superior, Wisconsin, U.S.A.
222Cage, J.C. 1970. The subacute inhalation toxicity of 109 industrial chemicals. British J. Indust. Med. 27.
299Curtis, M.W. & Ward, C.H. 1981. Aquatic toxicity of 40 industrial chemicals. Testing in support of hazardous substance spill prevention regulation. J. Hydrol. 51: 359.
1673Hellman, T.M. & Small, F.H. 1974. Characterization of the odour properties of 101 petrochemicals using sensory methods. J. Air Pollut. Control Assoc. 24: 979 - 982.
3Howard, P.H., Boethling, R.S., Jarvis, W.F., Meylan, W.M. & Michalenko, E.M., Handbook of Environmental Degradation Rates, 1991. Lewis Publicers, Inc., Chelsea, Michigan, U.S.A., pp. 725.
3120Howard, P.H., Boethling, R.S., Jarvis, W.F., Meylan, W.M. & Michalenko, E.M., Handbook of Environmental Degradation Rates, 1991. Lewis Publicers, Inc., Chelsea, Michigan, U.S.A., pp. 725.
3105MITI 1992. Biodegradation and bioaccumulation data of existing chemicals based on the CSCL Japan. Compild under the Safety Division Basic Industries Bureau Ministry of International Trade & Industry, Japan. Edited by Chemicals Inspection & Testing Institute, Japan.
1644Patty, F.A. 1967. Industrial hygiene and toxicology. Vol 2. Interscience Publishers.
1468Verschueren, K. 1983. Handbook of environmental data of organic chemicals. Van Nostrand Reinhold Co. Inc., New York. 1310 s.

 
 
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