Toilet Bowl Cleaner—Liquid

Similar to the technology used to produce cream cleansers, there are also formulas that can produce liquid toilet bowl cleaners with suspended abrasives [376,377]. The main difference between the cream cleansers and this type of product is that the suspending system should be acid stable instead of alkaline and/or bleach stable. Suspended particles are appearing in more and more of the toilet bowl cleaners. This has been commercialized in a gel form, which shows the suspended particles. 

Other hard surface applications rely on amphoteric surfactants to enhance viscosity in highly acidic or alkaline formulations. Some liquid toilet bowl cleaners, for instance, are formulated within a pH range of 2-4 (83). Amphoteric surfactants have been demonstrated to provide good gellation and stability in compounds containing peracetic acid (84). 

Automatic Liquid Toilet Bowl Cleaners Formulation... 

Li Quid Toilet Bowl Cleaner A Liquid Stain and Rust Remover... 

Three categories of bathroom cleaner are discussed here general bathroom cleaners, mildew removers (with some cross-over to bleach cleaners), and toilet bowl cleaners. Automatic toilet bowl cleaners are not discussed due to the dominance of solid, and not liquid, forms in this group. 

Originally, toilet bowl cleaners, like all-purpose cleaners, were powders based largely on sodium bisulfate [364], They were packaged in dispensers very much like powder abrasive cleansers. In fact, many products that have been mentioned in this review are used to clean the toilet. General bathroom cleaners, liquid and powder abrasive scourers, all-purpose cleaners, and even simple household bleach are used by consumers for this task. Modern cleaners specialized for toilet bowl cleaning, however, have one factor in common that these other formulas... 

Liquid Acid Toilet Bowl Cleaners (Disinfectant) High Quality... 

A related topic is dispensing tests. These are especially important for the in-tank toilet bowl cleaners. Usually the brute force method is used whereby the product is placed in an actual toilet tank, and the number of flushes to exhaust the product is measured. Alternatively, the product can be placed in a container of water the time required for the solid tablet or puck to dissolve completely is measured. (This is not relevant for liquid automatic cleaners.) The difference between the two methods is that the first uses repeated aliquots of fresh water to dissolve the item (as in real use), whereas the second uses the same volume of water for the whole experiment. 

In-bowl cleaners are used with mechanical cleaning by the consumer. These products are usually liquids, usually thickened in the range of 200-700 cP. The idea is that the product is dispensed up under the rim of the toilet and then runs down the bowl wall until it encounters the water. The package for the product often has a specially shaped bottle that enables placonent of the product under the rim (Figure 5.2). The product should be thick enough to cling to the vertical wall and yet not be so thick that the product does not spread well. It should also have a foam profile that collapses quickly so that the product rinses away well. As in the case of many bathroom cleaners, these also come in two types, the acid and the hypochlorite. 

Acid Cleaners are used with extreme caution. Bowl cleaners are generally acidic in nature, and are available in powder, preferred solid block or liquid form. The function of toilet cleaners is to remove effectively fecal soils, lime and rust deposits, and urinary calculus from commodes and urinals. 

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