1,4-dioxane


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1,4-dioxane

[¦wən ¦fȯr dī′äk‚sān]
(organic chemistry)
C4H8O2 The cyclic ether of ethylene glycol; it is soluble in water in all proportions and is used as a solvent.
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The viscosity measurements were carried out by Ubbelohde viscosimeter at 25 AdegC in presence of 1,4-dioxane solvent.
(An exception may be 1,4-dioxane, which showed a risk association with ASD diagnosis but was associated with a lower CSS.)
Similar to ultrasonic and equilibrium dialysis study, more binding is observed in case 1,4-dioxane than DMSO & DMF.
1-Bromotetradecane dissolved in 1,4-dioxane was added from a dropping funnel to a molar equivalent 1,4-dioxane solution of 1,10-phenanthroline in a 100 ml two-necked round-bottomed flask fitted to the reflux condenser and guarded from moisture using Ca[Cl.sub.2], being stirred in an oil bath at 50[degrees]C for 36 h.
Subsequent tests over the next 18-months found high amounts of 1,4-dioxane in the groundwater and brooks that run from the Ringwood Superfund site to the reservoir's northern reaches.
65 has established a safe harbor limit for 1,4-dioxane. If a product exceeds the Prop.
Glycine (7.51 g, 0.100 mol) was dissolved in an aqueous solution (150 mL) containing 0.100 mol NaOH, to which a 1,4-dioxane solution (150 mL) including di-t-butyl dicarbonate (24.0 g, 0.11) was added dropwise.
* 1,4-Dioxane: a process solvent mainly used in the manufacture of active pharmaceutical ingredients (APIs) and fine chemicals
Similarly, a variety of organic compounds like AHA (alpha hydroxyl acid), Quarternium 15, Dioxin, Amines, Fragrance (Fragrance Oils), Parabens, Phthalates, 1,4-Dioxane, Petrochemicals, Nanoparticles, Grain Spirits are also used in cosmetics.
Solvents used were as follows: tetrahydrofuran (THF) and 1,4-dioxane from Aldrich, toluene and diethyl ether (as precipitation agent) from Chimopar SA, anisole from Merck-Schuchardt, diphenyl ether (DPE) from Fluka-AG, and methanol from SC PAM Corporation SRL.