Dortmund Data Bank

Azeotropic Data

The experimental data shown in these pages are freely available and have been published already in the DDB Explorer Edition. The data represent a small sub list of all available data in the Dortmund Data Bank. For more data or any further information please search the DDB or contact DDBST.


No. Formula Molar Mass CAS Registry Number Name
1 C2H6O 46.069 64-17-5 Ethanol
2 C4H10O 74.123 71-36-3 1-Butanol
3 H2O 18.015 7732-18-5 Water
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Data Table

Azeotropic Type T [K] P [kPa] yaz,1 [mol/mol] yaz,2 [mol/mol] yaz,3 [mol/mol] Measurement Method Evaluation Source
none n.a. 101.325 n.a. n.a. n.a. n.a. Author 2
none n.a. 102.232 n.a. n.a. n.a. n.a. Author 1

(yaz - vapor and liquid mole fraction)

List of Azeotrope Types

none zeotropic

List of References

1 Newsham D.M.T.; Vahdat N.: Part I: Experimental Results for the Systems Methanol-Water-n-Butanol, Ethanol-Water-n-Butanol and n-Propanol-Water-n-Butanol. Chem.Eng.J. 13 (1977) 27-31
2 Frolov A.F.; Karaseva A.P.; Loginova M.A.: Dampf-Flüssig-Gleichgewicht im System Ethanol - n-Butanol - Wasser. Book: Fiz.Khim.Rastvorov (1972) 217-223

Azeotropic Data Overview