Effects of Concentration, Temperature, and Solvent Composition on the Partial Molar Volumes of Sodium Lauryl Sulfate in Methanol (1) + Water (2) Mixed Solvent Media

2011 ◽  
Vol 56 (8) ◽  
pp. 3400-3405 ◽  
Author(s):  
Ajaya Bhattarai ◽  
Sujeet K. Chatterjee ◽  
Tarun K. Deo ◽  
Tulasi Prasad Niraula
Keyword(s):  
Sodium Lauryl Sulfate ◽  
Mixed Solvent ◽  
Partial Molar Volumes ◽  
Solvent Composition ◽  
Lauryl Sulfate ◽  
Molar Volumes

scholarly journals Effects of Concentration, Temperature and Solvent Composition on the Partial Molar Volumes of Sodium Polystyrenesulphonate in Methanol -Water Solvent Media

1970 ◽  
Vol 23 ◽  
pp. 82-88
Author(s):  
Ajaya Bhattarai ◽  
Bijan Das
Keyword(s):  
Infinite Dilution ◽  
Mixed Solvent ◽  
Partial Molar Volumes ◽  
Chemical Society ◽  
Solvent Composition ◽  
Degree Of Substitution ◽  
Molar Volumes ◽  
Water Solvent ◽  
Dilution Effects

Precise measurements on the density of sodium polystyrenesulphonate solutions in methanol-water mixed solvent media containing 8, 16, and 25 weight per cent of methanol at 308.15, 318.15, and 323.15 K are reported. The degree of substitution of sodium polystyrenesulphonate used is 1, and the concentrations are varied from 1×10-2 to 3.8 ×10-2 monomol.l-2. The results showed a slight increase on (V0) were determined. the partial molar volumes with increasing polyelectrolyte concentration. The partial molar volumes of the polyelectrolyte at infinite dilution, (effects of the  temperature and solvent composition on the partial molar volumes are also investigated.Keywords: Sodium polystyrenesulphonate, polyion, partial molar volume.DOI: 10.3126/jncs.v23i0.2100Journal of Nepal Chemical Society, Vol. 23, 2008/2009 Page: 82-88 

scholarly journals The Effects of Concentration, Temperature and Solvent Composition on Partial Molar Volumes of Cetyltrimethylammonium Bromide in Methanol-Water mixed Solvent Media

1970 ◽  
Vol 24 ◽  
pp. 24-30 ◽  
Author(s):  
Sujit Kumar Shah ◽  
Ajaya Bhattarai ◽  
Ghanashyam Shrivastav ◽  
Sujeet Kumar Chatterjee
Keyword(s):  
Cetyltrimethylammonium Bromide ◽  
Mixed Solvent ◽  
Pure Water ◽  
Partial Molar Volumes ◽  
Chemical Society ◽  
Solvent Composition ◽  
Entire Concentration Range ◽  
Molar Volumes ◽  
Increasing Temperature ◽  
Bromide Solutions

The author Ajay Bhattarai was changed to Ajaya Bhattarai and the author Kumar Chatterjee was changed to Sujeet Kumar ChatterjeePrecise measurements on the density of cetyltrimethylammonium bromide solutions in pure water and in methanol(1) + water (2) mixed solvent media containing 0.10, 0.20 and 0.30 volume fractions of methanol at 308.15, 318.15 and 323.15 K are carried out to calculate the partial molar volumes. The concentrations are varied from 0.3 - 1.0 x 10-1 mol.l-1. The results showed almost constant on the partial molar volumes with increasing surfactant concentration. Also, the partial molar volumes are found to increase with increasing temperature over the entire concentration range investigated in a given mixed solvent medium and these values are found to decrease with increasing methanol content in the solvent composition. Keywords: Mixed solvent; Cetyltrimethylammonium bromide; Surfactan; Partial molarDOI: 10.3126/jncs.v24i0.2383 Journal of Nepal Chemical Society, Vol. 24, 2009 Page: 24-30

ASSESSMENT OF THE TOXICITY AND HAZARD OF SODIUM LAURYL SULFATE AT DIFFERENT EXPOSURE ROUTES

2020 ◽  
pp. 56-59
Author(s):  
M. V. Bidevkina ◽  
M. I. Golubeva ◽  
A. V. Limantsev ◽  
I. N. Razumnaya ◽  
T. N. Potapova ◽  
...  
Keyword(s):  
Sodium Lauryl Sulfate ◽  
Exposure Level ◽  
Hazardous Substance ◽  
Lauryl Sulfate ◽  
Upper Respiratory Tract ◽  
Mucous Membranes ◽  
Chloroprene Rubber ◽  
Upper Respiratory ◽  
Exposure Routes ◽  
Number Of Cells

Sodium lauryl sulfate is the most common surfactant used in the production of detergents, chloroprene rubber, plastics, artificial furs and in pharmaceutical industry. Sodium lauryl sulfate is a moderately hazardous substance when introduced into the stomach (DL50 for white mice and rats is in the range of 2086-2700 mg/kg), has a pronounced local irritant effect on the skin and mucous membranes of the eyes, has a skin-resorptive, sensitizing and pronounced cumulative effects. The threshold for acute inhalation action is set at 15,3 mg/m3 for changes in the function of the nervous system and irritating effects on the mucous membranes of the upper respiratory tract (an increase in the total number of cells in the nasal flushes).Recommended for approval tentative safe exposure level of sodium lauryl sulfate in the air of the working area is 0.2+ mg/m3 (aerosol).

Partial Molar Volumes of Some Multicharged Electrolytes in Aqueous Dimethylformamide at Various Temperatures

1998 ◽  
Vol 63 (4) ◽  
pp. 507-514
Author(s):  
Madan L. Parmar ◽  
Ch. V. Nageshwara Rao ◽  
Suresh Chand Attri
Keyword(s):  
Partial Molar Volumes ◽  
Water Systems ◽  
Molar Volumes ◽  
Density Measurements ◽  
Solution Density ◽  
Aluminium Sulfate ◽  
Ion Interactions

Partial molar volumes of ammonium aluminium sulfate and potassium aluminium sulfate in DMF-water mixtures (5-20 wt.% of DMF) have been determined from solution density measurements at various temperatures and electrolyte concentrations. The data were evaluated by using Masson equation and the obtained parameters were interpreted in terms of ion-solvent and ion-ion interactions. Both electrolytes have been found to act as the structure makers/promotors in DMF-water systems.

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