- Validations of cleansurfacesfree of residues fromhygieneproducts(within
legalrequirements). - Identificationin caseof accidentsand emergencies,e.g. unidentifiedspills,
unlabelled containers.
39.3.1 Controlof incoming goods,positive identification
Hygieneproducts are usuallydelivered to the consumer in two ways,either
filled in a rangeof small containers often termed`jerrycans'withsizesfrom
usually 5, 10, 20 and 30 L, drumswith200±220L, transit tanks with800 to
1000 L or as bulkchemicalsin roadtankers.
Table39.3 Alkalinecleaners
Ingredient Example Purpose
Bases Sodium Solve,peptise,softenor decomposeorganicsoil.
hydroxide
Potassium
hydroxide
Chelates Ethylenediamine- Chelatesnot onlysuppressthe negativeimpactof
tetraaceticacid waterhardnesson cleaningefficacyand provide
(edta) scaleprevention,theyalso can removefreshand
Nitrilotriacelate thin layersof inorganicdeposits,attackinorganic
(NTA) soil and assistsin removingorganicsoil when
Imidodisuccinate combinedin a matrixwithinorganicscale.
(IDS)
Gluconate
Builders Phosphates By chemicalnaturemostof the buildersare
Phosphonates chelates.Theyenhancesoil-removingand
Citrates suspendingpropertiesas wellas the effectsof
Silicates surfactants.
Surfactants Non-ionicor Providesoil penetration,soil emulsification,
anionic surfacewettingand low surfacetension.
Defoamers Hydrophobic Suppressfoamoccurringbothfromformula
non-ionics componentsand/orremovedsoil.
Sequestering Polyphosphates Preventscaling,especiallyin rinsephases.
agents Phosphonates
Corrosion Silicates Protectionof soft metalsagainstchemicalattack.
inhibitors
Oxidising Hypochlorites Assistin removalof tenaciousand insolublesoil.
cleaning By meansof oxidationtheycan breakdownlarger
boosters moleculesinto smallerfractionsor rendersoil
solubleby introducingfunctionalgroups.
Stabilisers Hydrotrophic Stabiliseliquidformulationsat highand/orlow
substances temperatures.
676 Handbookof hygiene controlin the foodindustry