New phosphate-free detergent—Modified Sodium Di-silicate (MDS)

Identification:

Chemical name: Modified sodium disilicate

Trade name: MDS

CAS No.: 1344-09-8

Molecular formula: Na2O·2SiO2

MDS is manufactured from sodium silicate acting with active auxiliaries via special process. Its pH value range 10.5 – 12.5, Bulk density 0.3—0.70g/ cm3. As a phosphorous-free detergent auxiliary, MDS satisfies all technical and ecological requirements for substitute of STPP.MDS can be the best substitute of sodium tripolyphosphate(STPP) because of its comprehensively applicable to production of phosphorus-free washing powders under different conditions. Besides, the general performance is far superior to some related traditional products at the same price level, such as 4A zeolite.

Technical Index:

Appearance: White powder or granule

Content of Na2O + SiO2％: 60min

Calcium ion exchange capacity (CaCO3, 35°C, 20min) mg/g:400min

Whiteness %:85min

pH:12.5max

Bulk density(g/cm3) :0.6-0.7(powder),0.3-0.6(granule)

Applications:

●Detergent auxiliary for washing powder substituting for STPP:MDS can be used to pre-proportioning for spray drying or post-proportioning for producing low-density phosphorous-free washing powder, and also can be used as base powder for producing concentrated phosphorous-free or low-phosphorous washing powder by agglomeration method. The product has good detergency ability and can be used together with 4A zeolite as binary auxiliary for producing high/low density phosphorous-free washing powder.

●Detergent auxiliary for soap substituting for STPP: MDS can chelate calcium and magnesium ions in water quickly and thoroughly, consequently improving detergency ability of products. Moreover, it also has favorable anti- re-deposition performance.

●Detergent auxiliary for textile dyeing and printing: it can be used as chelating agent for pretreatment agent as oil remover and scouring agent etc, and also can be used as favorable hydrogen peroxide bleaching stabilizer.

●Detergent auxiliary for industrial cleaning agent: MDS can be used as basic material for industrial cleaning agent such as metal cleaning agent, heavy oil dirt cleaning agent and petroleum pipeline dredging and cleaning agent etc.

●Ceramic grinding aid substituting for STPP traditional STPP and sodium metasilicate: MDS is used as grinding aid, slurry water reducing agent and glaze deflocculating agent in ceramic processing, favorable for facilitating grinding and capable of reducing ball grinding time by 3 hours and effectively removing harmful calcium ions and magnesium ions in ceramic materials.

Packing, storage & transportation:

Packing in 25kg plastic woven bag lined with plastic film inner bag. It shall be kept away from rain, moisture and direct sunlight during storage and transportation.