Reported in EPA TSCA Inventory.

Nonoxynols, with the CAS NO.26027-38-3, is also called 2-ethanediyl),.alpha.-(4-nonylphenyl)-.omega.-hydroxy-Poly(oxy-1; alpha-(4-nonylphenyl)-omega-hydroxy-poly(oxy-2-ethanediyl); ethyleneoxideadductnonylphenol; glycols,polyethylene,mono(p-nonylphenyl)ether; n-9; nonoxynol; nonoxynol-10; nonoxynol-12. Nonoxynols are mixtures of nonionic surfactants used as detergents, emulsifiers, wetting agents, defoaming agents, etc. nonoxynol-9, the compound with approximately 9 repeating ethoxy groups, is a spermatocide, formulated primarily as a component of vaginal foams and creams. These compounds are produced by ethoxylation of alkylphenols. The precursor nonylphenol is derived from phenol and a mixture of nonenes.

Physical properties about Nonoxynols are: (1)ACD/LogP: 6.178; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 2.68; (4)ACD/LogD (pH 7.4): 2.68; (5)ACD/BCF (pH 5.5): 9.23; (6)ACD/BCF (pH 7.4): 9.23; (7)ACD/KOC (pH 5.5): 17.29; (8)ACD/KOC (pH 7.4): 17.29; (9)#H bond acceptors: 5; (10)#H bond donors: 1; (11)#Freely Rotating Bonds: 13; (12)Flash Point: 274.3 °C; (13)Enthalpy of Vaporization: 84.74 kJ/mol; (14)Boiling Point: 529.9 °C at 760 mmHg; (15)Vapour Pressure: 4.65E-12 mmHg at 25°C

You can still convert the following datas into molecular structure:
(1)SMILES:[O-]S(=O)(=O)OCCOc1ccc(cc1)CCCCCCCCC.[NH4+];
(2)Std. InChI:InChI=1S/C17H28O5S.H3N/c1-2-3-4-5-6-7-8-9-16-10-12-17(13-11-16)21-14-15-22-23(18,19)20;/h10-13H,2-9,14-15H2,1H3,(H,18,19,20);1H3;
(3)Std. InChIKey:RMCWGZGQNDVYCY-UHFFFAOYSA-N

The toxicity data is as follows: