Machine Dishwashing Detergent

Liquid Machine Dishwashing Detergent-I TKPP (60% solution) 15-25% 

Inqredi ents %wt/wt Amphoterge KJ-2 2.0 Sodium carbonate 9.0 Tetrapotassium pyrophosphate 12.0 Kasil No. 1 22.0 Potassium hydroxide (45% sol n.) 8.0 Water 47.0 

Charge the mixing vessel with all the water. Slowly add potassium hydroxide followed by the sodium carbonate, tetra-potassium pyrophosphate and Kasil No. 1. Mix until fully dissolved then add Amphoterge KJ-2. Mix for 10-15 minutes to insure batch uniformity. 

Inqredi ents %wt/wt Alkawet CF 2.0 Sodium carbonate 18.0 Sodium metasilicate, anhydrous 30.0 Sodium tripolyphosphate 50.0 

Blend the sodium metasilicate and sodium tripolyphosphate in the mixing vessel. In a separate vessel, mix the Alkawet CF and sodium carbonate until a uniform system is obtained. Add the sodium carbonate/Alkawet CF mixture to the batch and blend the system until uniform. 

SOURCE Lonza, Inc. Household, Industrial Institutional Cleaners Formula C-99-91 

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Starting Formulations for Home Machine Dishwashing Detergents B 7% Phosphorous(A)... 

Among the product bases whose pH usually lies outside the neutral range are acid and alkaline household cleaners cold wave lotions, hair straighteners, and depilatories (alkaline, pH > 10) and antiperspirants (acid, pH < 5). Fabric softeners are acidic, with pH values between 3 and 5. Machine dishwashing detergent powders are alkaline and contain perborates, which are oxidizing agents. 

EO/PO block copolymers represent an important class of surfactants because of their low-foaming characteristics. They are used in machine dishwashing detergents, as well as a variety of specialty applications that require low- or no-foaming surfactants. They find application as rinse aids, solubilizers for fragrances, and as thickeners and gelling agents. 

Mn-Mejtacn (Figure 16.11) is still used in automatic dishwashing products, where color and fiber damage is of lesser importance. Another metal complex used in machine dishwashing detergents is pentaamine acetate cobalt (III) nitrate (PAAN) [34]. This highly water-soluble, relatively inexpensive catalyst is effective at very low concentration. 

Hand dishwashing agents have a lower pH (6-8) than laundry or machine dishwashing detergents, and preservatives are therefore needed. 

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