The main problem which is concerned in using water in textile processes is water hardness caused by the presence of soluble salts of metals including calcium and magnesium.
42.
When mixtures of mucilaginous, protein-containing materials together with soluble salts of dichromate are exposed to ultraviolet light, the protein content becomes tanned and resistant to solution in water.
43.
One of the disadvantages of closed systems like Earth Boxes and SIPs is that soluble salts cannot be flushed into the lower soil profile and build up over time.
44.
The product of that reaction would be titanium iodide, which is a very soluble salt, but it would also generate heat which volatilises some of the remaining elemental iodine.
45.
The first measurement indicated that the surface layer contained water-soluble salts and had a pH between 8 and 9 . Additional tests on soil composition revealed the presence of perchlorate.
46.
It can also be prepared by adding potassium bisulfate ( KHSO 4 ) to a solution of the more soluble salt ammonium peroxydisulfate ( NH 4 ) 2 S 2 O 8.
47.
The main chemical reagent used in the cotton scouring is sodium hydroxide which converts saponifiable fats and oils into soaps, dissolves mineral matter and converts pectose and pectin into their soluble salts.
48.
One of the disadvantages of subirrigated closed systems, such like Earth Boxes and sub-irrigated planters, is that soluble salts cannot be flushed into the lower soil profile and build up over time.
49.
You have probably precipitated the insoluble acid ( eg benzoic acid ) of a soluble salt by lowering the pH .-- G N Frykman 20 : 52, 5 August 2006 ( UTC)
50.
IMO PSPC ( performance standard for protective coatings ) regulations set a maximum allowable concentration of soluble salts on a surface to be coated, measured as sodium chloride, of 50 mg " m " 2.
