IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Styrene with Water

Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) Styrene; C8H8; [100-42-5]  NIST Chemistry WebBook for detail

Original Measurements:
   Lane, W.H., Ind. Eng. Chem. Anal. Ed. 1946, 18, 295-6.

Variables:
   Temperature = 6 °C - 51 °C

Prepared By:
   A. Maczynski and Z. Maczynska

Experimental Data:   (Notes on the Nomenclature)

Solubility of water in styrene
t/°C	g₂/100 g solution	10³ * Mole Fraction x₂ (compiler)	Comment(s)
6	0.120	1.8	Karl Fischer Reagent Method
24	0.032	3.8	Karl Fischer Reagent Method
31	0.066	4.8	Karl Fischer Reagent Method
40	0.084	5.8	Karl Fischer Reagent Method
51	0.101	7.1	Karl Fischer Reagent Method
14	0.123	2.3	Cloud Point Method
27	0.040	3.5	Cloud Point Method
34	0.060	4.6	Cloud Point Method
40	0.080	5.7	Cloud Point Method
45	0.100	6.9	Cloud Point Method

Method/Apparatus/Procedure:
   (a) A large sample of (1) containing a slight excess of (2) was shaken at a given tempreature and then allowed to stand in a water bath at this temperature for 24 hr to ensure complete separation of the two phases before withdrawal of sample of the rich phase for titration of the water present with the Karl Fischer reagent.
(b) Duplicate determinations gave cloud points agreeing within 1 °C, except in the case of 0.120 g(1)/100 g solution where the agreement was within about 3 °C. Cloud points at 0.040 (1)/100 g solution were very faint. No more detals were reported.

Source and Purity of Materials:
   (1) Source not specified; fresh samples; used as received.
   (2) Not specified.

Estimated Errors:
   Solubility: (a) ± 1.5% (from two determinations)
   Temperature: (b) ± 1 to ± 3 °C.