Laundry — Process Challenge

Agents de construction et chélateurs pour eau dure

En eau dure, les ions Ca2+/Mg2+ désactivent les tensioactifs anioniques (précipitation de savon de chaux) et consomment le pouvoir détergent ; la formulation nécessite le choix d'agents de construction et de chélateurs pour adoucir l'eau et maintenir l'alcalinité
Updated Jun 2026
Approche de solution

RawSource supplies the base chemicals that go into these programs. We can help with product selection, grade matching, and sourcing from multiple origins for supply security.

Typical Formulation Workflow
1
Application & Soil Assessment
Define the cleaning task, surfaces, soils, and water hardness, plus the safety and regulatory profile for the use environment.
2
Surfactant & Builder Selection
Match surfactants, builders, solvents, chelants, acids or alkalis, and preservatives to the soil, surface compatibility, and label claims.
3
Formulation & Use-Dilution Trial
Optimize the actives ratio and use dilution, checking foam, clarity, stability, and performance at the in-use concentration.
4
Performance & Stability Validation
Confirm cleaning efficacy, storage and freeze-thaw stability, and packaging compatibility before scale-up.
Recommended Chemistries (6)
Tetrasodium EDTA (EDTA Na4)
CAS 64-02-8
Amines et Amides
Broad-spectrum chelant binding Ca, Mg, Fe, Cu across wide pH range
Broad-spectrum aminopolycarboxylate that sequesters Ca2+/Mg2+/Fe so they cannot precipitate surfactant as lime soap, restoring detergency in hard water
Point de fusion:300 °C (decomposes)   Densité:6.9 lb/gal /Apparent density/   Solubility: Slightly soluble in ethanol
Aperçu rapide
Détails complets
Sodium Tripolyphosphate (STPP)
CAS 7758-29-4
Acides et Sels
Chélation / Séquestration
Classic detergent builder: sequesters hardness ions and provides buffering/anti-redeposition, the historical workhorse for hard-water laundry powders
Point de fusion:622 °C   Densité:2.52 g/cm3   Solubility: Freely soluble in water. Insoluble in ethanol
Aperçu rapide
Détails complets
Sodium Carbonate (Soda Ash)
CAS 497-19-8
Acides et Sels
Water softener and alkaline builder for powder and liquid laundry
Precipitates hardness as carbonate and supplies wash-liquor alkalinity, sparing the surfactant and raising soil saponification
Point de fusion:856 °C   Point d'ébullition:Decomposes on heating by CO2 loss   Densité:2.54 g/cu cm
Aperçu rapide
Détails complets
Citric Acid (Anhydrous, FCC Food Grade)
CAS 77-92-9
Acides et Sels
Biodegradable acid descaler and chelating agent
Biodegradable chelant that binds Ca2+/Mg2+; preferred where phosphate/EDTA are restricted
Point de fusion:153 °C (anhydrous)   Point d'ébullition:Decomposes   Densité:1.54 at 20 °C
Aperçu rapide
Détails complets
Sodium C14-16 Olefin Sulfonate
CAS 68439-57-6
Tensioactifs
Mild anionic with better hard water tolerance than LAS
Alpha-olefin sulfonate tolerates hardness better than LAS, holding foam and cleaning where LAS would precipitate
Aperçu rapide
Détails complets
Sodium Hexametaphosphate (SHMP)
CAS 10124-56-8
Additifs de Spécialité
Chélation / Séquestration
Threshold sequestrant/builder that ties up Ca2+/Mg2+ below stoichiometric dose and disperses hardness crystallites, a hard-water builder laundry formulators expect alongside STPP
Physical Description: Polymeric sodium metaphosphates: Clear hygrosco…   Solubility: CLEAR, HYGROSCOPIC GLASS; MP 628 °C; SOL IN WAT…   Decomposition: When heated to decomposition it emits toxic fum…
Aperçu rapide
Détails complets

Besoin d'aide pour sélectionner le bon produit chimique ?

Notre équipe peut vous aider pour la sélection des grades, le conseil en dosage et l'approvisionnement multi-origines.

Demander un Devis All Home & Industrial Care Problems
Demander un Devis

Catalogue en français →