| 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 : |
| 7 |
7d - 1d, |
| 1 |
scientific judgement based upon estimated aqueous aerobic biodegradation half-lives. |
| |
Howard 1991 |
| |
| Half-life in water, days : |
| 7 |
7d - 1d, |
| 1 |
in surface water: scientific judgement based upon estimated aqueous aerobic biodegradation half-lives. |
| 14 |
14d - 2d, |
| 2 |
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 |
| 1848 | Anon. 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. |
| 187 | Bringmann, G. & Kühn, R. 1976.
Vergleichende Befunde der
Schadwirkung wassergefährdender Stoffe gegen Bakterien
(Pseudomonas putida) und Blaualgen (Microcystis aeruginosa).
Gwf-Wasser-Abwasser 117(9). |
| 188 | Bringmann, 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. |
| 189 | Bringmann, G. & Kühn, R. 1980b.
Bestimmung der biologischen
Schadwirkung wassergefahrdender Stoffe gegen Protozoen.
II.
Bakterienfressende Ciliaten, Z.
Wasser/Abwasser Forsch. 1: 26 -
31. |
| 3295 | Brooke, 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.
|
| 222 | Cage, J.C. 1970.
The subacute inhalation toxicity of 109
industrial chemicals.
British J.
Indust.
Med. 27. |
| 299 | Curtis, 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. |
| 1673 | Hellman, 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. |
| 3 | Howard, 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.
|
| 3120 | Howard, 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.
|
| 3105 | MITI 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.
|
| 1644 | Patty, F.A. 1967.
Industrial hygiene and toxicology.
Vol 2.
Interscience Publishers. |
| 1468 | Verschueren, K. 1983.
Handbook of environmental data of
organic chemicals.
Van Nostrand Reinhold Co.
Inc., New York.
1310 s. |
