Kauri butanol value
The Kauri-Butanol value ("Kb value") is a measure of the solubility of an organic solvent and is determined according to the ASTM standard ASTM D1133. The higher the solubility, the higher the unitless Kb value. Weak solvents are between 10 and 20, chlorinated solvents can reach values in the hundreds. It is an alternative to the aniline point and is indicated for hydrocarbon solvents.
The dimensionless value is determined by the cloud point of the titration of a Kauri resin - butanol solution against the solvent.
| solvent | Kauri butanol value |
|---|---|
| Decafluoropentane | 9 |
| Methyl nonafluorobutyl ether | 10 |
| R-225 (dichloropentafluoropropane) | 31 |
| 1,1,2-trichloro-1,2,2-trifluoroethane | 31 |
| 1,1-dichloro-1-fluoroethane | 56 |
| 2-propanol | 80 |
| Tetrachlorethylene | 90 |
| 1,1,1-trichloroethane | 123 |
| 1-bromopropane | 126 |
| Trichlorethylene | 129 |
| N-methyl-2-pyrrolidone | > 300 |
Individual evidence
- ↑ bauteilreinigung.de: Kauri butanol value. ( Memento of the original from May 23, 2014 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ ASTM D1133 - 10 Standard Test Method for Kauri Butanol Value of Hydrocarbon Solvents.
- ↑ a b G. G. Sward: Paint Testing Manual . ASTM International, 1972, ISBN 0-8031-0099-X , pp. 133 ( limited preview in Google Book search).
- ↑ a b c d e f Jason Kehren, 3M Company: Hydrofluoroethers versus Alternative Cleaning Solvents .
- ↑ a b c d Angelo Lucia and Erik J. Finger: Co-Solvent Selection and Recovery. (PDF; 479 kB) p. 6.
- ↑ Chemtronics: ( Page no longer available , search in web archives: Technical Data Sheet IPA - Isopropyl Alcoho l ) (PDF; 55 kB).
