Dichromates are power oxidizing agents which find applications in:
Chromium source in preparing chromium compounds
Leather tanning and screen printing
Pyrotechnics and explosives
Metal Treating and corrosion inhibitor
Catalyst for the chromium metal production
In biological field, potassium dichromate is used as a fixative for used for conservation of tissue sections. …..
Procedure of Passivation :
1. Isolate the exchanger and set up a circuit with an external tank with heating coil inside and a pump to circulate cleaning solution.
2. Flush the Exchanger with fresh water to remove loose material (like dirt etc.) till such time clear water comes.
INHIBITED ACID CLEANING:-
3. Circulate inhibited Acid (5-6 % Citric Acid and 1% Rodine 213) along with non ionic wetting agent like RXSOL-T300 through Exchanger Loop for 6 to 8 hours
4. It total i…..
Specially designed for removal of rust from any steel surface area and rust stain from Brass , Copper , S.S wood , ceramic and aluminium surfaces , painted or not . And act as surface brightner.
For polishing almost all metals, such as brass, copper, nickel, chrome, stainless steel, aluminium and even for machinery and golf clubs……
Phenolphthalein is used as an acid or base indicator where, in contact or presence of acid, it will turn colorless and with a base, it will turn into a fuchsia color. It is also a component in universal indicator, a solution consisting of a mixture of pH indicators (usually phenolphthalein, methyl red, bromothymol blue, and thymol blue).
CAS Number 77-09-8
Empirical Formula (Hill Notation) C20H14O4
Molecular Weight 318.32
Phenolphthalein is another commonly used indicator for titrations,…..
Selected designed for workers involved in the stripping cleaning of ship cargo and tanks. Ship personnel handling chemicals activity require specialized protective suit which is not only chemicals resistance in nature but also flexible in each and every angle to provide them protection against hazardous liquids and vapors……
High penetration & emulsification , Reduces down time.
Low toxicity, non -corrosive. Highly effective, economical solvent cleaner.
For cleaning of machinery parts, bulk heads, decks, bottom plates & any oil/grease dirty areas.
Used for cargo tank cleaning of mineral oils and petroleum based chemicals, Sludge etc .
CAUTION : RXSOL-20-2059-025 / 050 is alkaline in nature and contact of the skin or eyes should be avoided.
NOTE : The data set forth in this Bulletin is …..
RXSOL-20-T-300-210 has a long non-polar hydrocarbon chain and a highly polar group at the end of the molecule thus having a cleaning power better than ordinary soap.
CHARATERISTIC: ( Why RXSOL-20-T-300-210, is better than soap?)
1) The %u201CT-Pol Heavy Duty%u201D are superior to soaps because they donot form insoluble salts Ca+²,Mg+², & Fe+³,ions as soaps do. For e.g :- 2RCOO¯Na+ +Mgso4 Ù(RCOO)2 Mg+² + Na2So4 Soaps Insoluble 2R So3¯Na+ + MgSo4[ R So3¯]2Mg+² +Na2So4 T-Pol Heavy Duty.
Other Name : Ammonium persulfate
Persulfate d'ammonium [French]
PEROXYDISULFURIC ACID, DIAMMONIUM SALT
Peroxydisulfuric acid (((HO)S(O)2)2O2), diammonium salt
diazanium sulfonatooxy sulfate
It also helps to detect pinholes after welding.
Why Passivation required ?
1. Stainless Steel owes its corrosion resistance to the formation of a chromium oxide surface layer but this happened due to presence of oxygen , And if the oxide has been stripped, perhaps by pickling, then the oxide layer takes a short time to reach its full thickness and this can be accelerated by passivation.
2. The heat tint produced by welding is not only unsightly but the thicker oxide layer includes chromium…..
Mix well before using. Apply with brush, or sponge. Allow to stand for a few minutes. Wipe off or rinse with rinse with copious amount of Water. Heavily stained areas, such as ‘rust spots’ on sails and ‘rust runs’ from steel fittings, may require repeat treatments, or more than a few minutes to remove the rust stain. RXSOL ORG – 4 works best when surfaces remain slight wet, or damp during the treatment period, therefore it is best to avoid fast drying conditions……
Safe Scale Remover with colour Indicator – Red to Yellow
RXSOL-22-2210-200 is mixed with fresh water 3 to 20 percent ( 3 Ltr to 100 Ltr water ) depending on deposition of scaling.
The most effective method is circulation for large systems or components like boilers, evaporators, condensers, heat exchangers and generally closed systems that have the capability to circulate at a temperature of approximately 40-60°C, for 6-12 hours and solutions of 5-40% of RXSOL-22-2210-200 in water. Keep in …..
Drying: Drying is recommended prior to painting with all types of paint except those applied by electro deposition. In electro painting processes, drying is optional if deionised water rinsing has been used and is recommended if deionised water rinsing has been omitted.
Effluent: Passiphos – 683 solution may need treatment, neutralization or dilution before being discharged to the sewage.
Equipment: It is recommended that all tanks for use with this treatment constructed of stainless S.S……
specially designed for removal of rust from any steel surface area and rust stain from Brass , Copper , S.S wood , ceramic and aluminium surfaces , painted or not . And act as surface brightner.
Prevents further rusting.
Economical , cost effsctive.
Protects and maintains from corrosion
Acts as rust proofing agent before the application of paints or coatings.
It doesn%u2019t affect rubber and plastic compounds
Pale yellow or Brown Liquid
Density, in g/cm3 at 15°C:
Flash Point, (PMCC) in °C:
pH, in conc:
< 1.5 Compatibility: Metal: Contains corrosion inhibitors, Polymer Rubber: No known effect. S.....
This industrial strength acid cleaner will remove embedded mineral deposits and carbonaceous soils such as rust, calcium, urine stains, soap scum and efflorescence from man-made tile and cement grout. Can be used to etch hard-to-clean grout by removing a super fine layer, leaving your grout sparkling bright and clean. …..
Using Application :
Oxalic Acid is used extensively for boat cleaning, it can be used on timber, GRP and steel craft for the removal of rust and waterline stains and also to clean timber decks. For vertical applications oxalic can be mixed with wallpaper paste to make a thick solution, this mix will cling to any vertical surface and can be washed off with water.
REMOVAL OF IRON STAINS
Iron stains can be removed by scrubbing the stained area with an aqueous solution of oxalic acid in water. …..