| Chemical |
Propyleneglycol |
| CAS-number : |
57-55-6 |
| |
| Synonyms : |
| 1,2-propanediol |
| propyleeniglykoli |
| |
| Sumformula of the chemical : |
| C3H8O2
|
| EINECS-number : |
| 2003380 |
| |
| Uses : |
Solvent.
|
| |
| Molecular weight : |
76.11 |
| |
| Vapor pressure, mmHg : |
| 0.08 |
at 20°C, Weber et al. 1981 |
| |
| Boiling point, °C : |
| 189 |
|
| |
| Log octanol/water coefficient, log Pow : |
| -0.92 |
Hansch & Leo 1985 |
| |
| Henry's law constant, Pa x m3/mol : |
| 0.0012 |
Simmons et al. 1976 |
| |
| Volatilization : |
Relative volatility (nBuAc=1) = 0.010
The value of the Henry's Law constant indicates that
1,2-propanediol is essentially not volatile from water (Lyman
et al. 1982).
|
| |
| Mobility : |
The complete miscibility in water and low Kow of
1,2-propanediol is indicative of very high mobility in soil
(Howard 1990).
|
| |
| Other physicochemical properties : |
Miscible (Merck Index 1983).
|
| |
| Chemical oxygen demand, g O2/g : |
| 1.63 |
5 days, Bridie et al. 1979 |
| |
| Biochemical oxygen demand, g O2/g : |
| 1.08 |
5 days, Bridie et al. 1979 |
| |
| Other information of degradation : |
Standard dilution BOD water, 5-day 64% BODT, sewage inocula
(Bridie et al. 1979).
Nutrient broth, 100% degradation in 4 days (aerobic
conditions), 100% degradation in 4 - 9 days (anaerobic
conditions), activated sludge or digester sludge inocula, no
significant degradation in sterile controls (Kaplan et al. 1982)
Standard dilution BOD water, 5-day 62% BODT, 20-day 79% BODT,
sewage inocula; syntetic seawater dilution, 5-day 55% BODT,
20-day 83% BODT, raw wastewater inocula (Price et al. 1974).
Sewage die-away, 74.5% BODT in 5 days (Wagner 1976).
1,2-propanediol has been found to be degradable via anaerobic
biotechnology (Howard 1990).
Standard dilution BOD water, 5-day 26.6% BODT; seawater
dilution, 5-day 59.5% BODT (Takemoto et al. 1981).
|
| |
| LD50 values to mammals in oral exposure, mg/kg : |
| 21000 |
|
| |
| EC50 values to microorganism, mg/l : |
| 34800 |
Microtox, Tarkpea et al. 1986 |
| |
| LC50 values to fishes, mg/l : |
| 5000 |
> 5000, 24hr, Carassius auratus |
| |
Bridie et al. 1979 |
References |
| 182 | Bridie, A.L. et al. 1979.
The acute toxicity of some
petrochemicals to goldfish.
Water Res. 13: 623. |
| 1680 | Bridie, A.L., Wolff, C.J.M. & Winter, M. 1979.
BOD and COD of
some petrochemicals.
Water Res. 13: 627 - 630. |
| 2958 | Hansch, C and Leo, A.
J. 1985.
Medchem Project Issue No 26.
Claremont C.A.
Pomona College. |
| 2992 | Howard, P.
H. et al. 1990.
Handbook of Environmental Fate and
Exposure Data for Organic Chemicals.
Vol.
II: Solvents.
Lewis
Publishers, Inc.
Chelsea. pp 546. |
| 3004 | Kaplan, D.
L. et al. 1982.
Environ.
Sci Technol 16: 723 - 725. |
| 2960 | Lyman, W.
J. et al. 1982.
Handbook of Chemical Property
Estimation Methods.
Environmental behavior of organic
compounds.
McGraw-Hill New York. |
| 3006 | Merck Index. 1983.
An Encyclopedia of Chemicals, Drugs and
Biologicals 10th ed. p 853.
|
| 1667 | Price, K.S.
Waggy, G.T. & Conway, R.A. 1974.
Brine shrimp
bioassay and seawater BOD of petrochemicals.
J.
Water Pollut.
Control.
Fed. 46(1): 63 - 77. |
| 3017 | Simmons, P. et al. 1976. in Book Pap, Int.
Tech.
Conf.
Research
Triangle Park, N.
C.: Amer.
Assoc.
Text. p 212 - 217.
|
| 2967 | Takemoto, S. et al. 1981.
Suishitsu Okadu Kenkyu 4: 80 - 90. |
| 2418 | Tarkpea, M. et al. 1985.
Comparison of the Microtox test with
the 96-Hr LC50 for the Harpacticoid Nitocra spinipes.
Ecotoxicol.
Environ.
Safety 11: 127. |
| 3011 | Wagner, R. 1976.
Vom Wasser 47: 241 - 265. |
| 2413 | Walker, J.
D. 1987.
Effects of chemicals on microorganisms.
Journal WPCF 59 (6): 614 - 625. |
| 3012 | Weber, R.
C. et al. 1981.
Vabor Pressure Distribution of
Selected Organic Chemicals.
USEPA-600/2-81-021 p 24. |
