Radiator cleaners

Sodium bisulfate, NaHSO, is a convenient mild acid and is safe for uses as a household toilet-bowl cleaner, automobile-radiator cleaner, and for swimming pool pH adjustment. It is used for metal pickling, as a dye-reducing agent, for soil disinfecting, and as a promoter in hardening certain types of cement. 

Larger organic molecules can form complexes with metal ions, too. Radiator cleaner consists of a water-soluble complexing agent, such as the organic compound oxalic acid, which forms a water-soluble cage around metal ions and lifts them from the walls of the radiator. The metals that are found deposited on radiator walls, such as calcium, were once dissolved in the radiator water. We don t normally think of calcium as being a metal, but it is. Calcium is located on the left side of the periodic table, which makes it a metal, and it can form coordination complexes as transition metal ions do. When calcium forms a complex with oxalic acid, the calcium becomes water soluble. 

The greatest portion of the product is used in a variety of cleaning products, including substances for the bleaching and cleaning of wood, cork, cane, feathers, and natural and synthetic fibers. Many metal polishes, auto radiator cleaners, and laundry rinses also contain oxalic acid. Some rust-proofing materials also contain the compound. 

Products and Uses Usually added to radiator cleaners, concrete cleaners, rug cleaners, upholstery cleaners, toilet bowl cleaners, ink remover, rust remover, metal polishes, wood cleaners, textile bleaching, and skin bleaching preparations. 

Uses Emulsifier, dispersant and wetting agent used in alkaline cleaning formulations antigelling agents, automotive radiator cleaners, metal, cement, brick, and tile cleaners for crystal growth control plastics, rubber latex stabilizer... 

Synonyms Naphthalenesulfonic acid, bis-(1-methylethyl)-, sodium salt Empirical CieH2oNa03S Properties M.w. 315.39 anionic Uses Emulsifier, dispersant and wetting agent used in alkaline cleaning formulations antigelling agents, automotive radiator cleaners, metal, cement, brick, and tile cleaners for crystal growth control plastics, rubber latex stabilizer Trade Name Synonyms Rhodacal BA-77 t[Rhodia HPCII http //www.rhodia-hpcii.com, Rhodia HPCII France... 

Alkali metal phosphates find use in numerous specialised formulations, for example, in car radiator cleaners [19], paint strippers [20], carpet cleaners, bleaching and sanitary preparations [21], shaving creams and cosmetic cleaners, as well as industrial formulations for bottle washing, textile cleaning and metal cleaning. 

Once we landed, we spent more than an hour in our rental car, cruising around town looking for a one-hour dry cleaner, which turned out to be an impossible task at 8 P.M. hr despair, we finally stopped at a 7-11, where Captain Keller loaded up on cleaning formulas and sponges. Back at the motel, I slept peacefully while he spent most of the night scrubbing the spots, pausing periodically to dry his official blouse on the radiator. 

Cleaning. If the drained coolant is rust-colored or the radiator, as viewed through the filler neck, is rusty, the system should be cleaned. A flush type product will facilitate removal of sludge and loosely adherent rust. However, if the system is badly rusted, a heavy-duty cooling system cleaner will be required. In either case, the manufacturer s directions should be carefully followed. 

An immersible transducer is a radiating device accommodated in a housing which can be submerged in a liquid bath to energize the liquid and produce cavitation. An immersible transducer placed in a still tank therefore turns that tank into an ultrasonic cleaner. The immersible transducer is, in effect, a standard tank (turned inside out) with the radiating surface on the outside and the transducers on the inside. 

A woman in her 30s asks you what she can do about the pain in her back. She says she is a cleaner and thinks the problem is the result of her work, She says the pain affects the upper part of her back on both sides and radiates round to the top of her ribs. What would you suggest ... 

These results on dislocations illustrate the simplifying advantage of a metal in supporting no electronic defects, but show also the basic difficulty of a lack of convenient and specific markers for the defects produced. The possibility of interference by surface impurities was not eliminated, although metals can usually be studied under cleaner conditions than can any other class of substance. The extreme care necessary for clean experiments is perhaps not justified for radiation experiments with dislocations, because mechanical working is a simpler and more nearly universal way of introducing them (54). 

Samples for UV/Oj radiation were also prepared by irradiation with UV in the atmosphere for 60 minutes using a conventional UV/03 cleaner (Model 42-220, Jelight). In order to provide a homogeneous exposure, samples were manually stirred every 10 minutes with a spatula. The UV output of the UV/03 generator was 28,000 pWatt per cm2 at a wavelength of254 nm. 

Decontamination of Equipment. In most cases of contamination of equipment and buildings, a mixture of normal household cleaning methods will remove the material. Prior to decontamination conduct a radiation survey of the equipment. Vacuum cleaners that can handle wet material and have high efficiency filters are particularly useful. Some surfaces may require... 

Gamma radiation is growing as an accepted alternative to ethylene oxide sterilization. Although it is cleaner than ethylene oxide in that it does not leave any residue, there is a tendency for resins to discolor or turn yellow. 

Improvement to the decarboxylation of indole-2-carboxylic acids has been made by the use of microwave radiation. Under these conditions the copper chromite can be eliminated from the standard reagent mixture of copper chromite in quinoline and reactions are faster and cleaner <93JOC5558>. The ketene (399) generated from either the acid chloride or enol ester (398) of indole-3-carboxylic acid undergoes cyclic tetramerization to give the macrocyclic product (400) (Scheme 132) <91JHC1569>. 

An alternative route involves end-capping to produce a terminal hydroxyl followed by reaction with trichloroacetyl isocyanate (Equation 5.23). This new, reactive end group can be used to initiate the growth of a second block via the photoreduction method proposed by Bamford in which magnesium or ihenium carbonyls are excited by UV or visible radiation and extract a chloride atom from the terminal unit, thereby creating a radical site. As only one radical is formed, this is a much cleaner reaction compared with (1) however, block lengths are more difficult to control in both these radical reactions, and the exact structure of the product formed can depend on the mechanism of the termination reaction. 

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