Ammonium Persulfate APS CAS 7727-54-0

Ammonium persulfate APS CAS 7727-54-0

Description

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CAS: 7727-54-0

Synonyms: Ammonium persulfate,APS

Einecs: 231-786-5

Molecular Formula: H8N2O8S2

Grade: 98.5%

Package: 25kg/bag or as required

Ammonium persulfate is a white, crystalline, odourless salt. It is used as initiator for the polymerisation of monomers and as a strong oxidizing agent in many applications. It has the particular advantage of being almost non-hygroscopic, of having a particularly good storage stability as a result of its extremely high purity and of being easy and safe to handle.

Specification:

Appearance	white crystalline salt
Assay	98.5% w/w min
Residue on Ignition (as sulfate)	0.02% w/w max
Chloride and Chlorate(as Cl)	0.001% w/w max
Manganese(as Mn)	0.00005% w/w max
Iron(Fe)	0.0002% w/w max
Heavy Metals(as Pb)	0.0005% w/w max
Moisture	0.1% w/w max
Active Oxygen	6.91% w/w min
PH（50g/L）	3.5~5.5
Decomposition of the product as supplied	at above 130°C
Recommended storage temperature	see MSDS
Storage stability as from date of production	12 months

Storage：

APS is not combustible but assists combustion of combustible materials due to release of oxygen. Provided it is stored under appropriate condition. It must be stored dry in closed containers and protected from direct sunlight, heat and humidity. Impurities such as dirt, rust or traces of metal and reductants may cause catalytic decomposition. The product as supplied or in solution needs to be handled with appropriate care. The eye, skin and clothes must be protected when working with APS. APS as damp powder or aqueous solution has a bleaching and slightly corroding effect.

Application：

Polymerisation: Initiator for the emulsion or solution polymerisation of acrylic monomers, vinyl acetate, vinyl chloride etc. and for the emulsion copolymerisation of styrene, acrylonitrile, butadiene etc.. Dosage: 0.1-0.5% APS. Temperature: 75-95°C. In combination with redox systems (ascorbic acid, Rongalit, sulfites or sugar – possibly in combination with heavy metal salts such as Fe2+ it can also be used for polymerization reactions carried out at lower – and even at ambient – temperatures. To reduce the residual monomer content, a combination of APS with TBHP-78-AQ is recommended, particularly in cases where redox systems are used.

Metal treatment: Treatment of metal surfaces (e.g. in the manufacture of semiconductors; cleaning and etching of printed circuits), activation of copper and aluminium surfaces.

Cosmetics: Essential component of bleaching formulations.

Textile: Desizing agent and bleach activator – particularly for cold bleaching.

Others:

– Chemical synthesis

– Water treatment (decontamination)

– Waste gas treatment, oxidative degradation of harmful substances (e.g. Hg)

– Disinfectant

– Paper (modification of starch, repulping particularly for cold bleaching)

Transportation:

Road/Rail transport: GGVS, GGVE, ADR, RID\CLASS 5.1

Sea transport: GGV See/IMDG code: CLASS 5.1 Page 5126,UN no.1444

Water hazards class 1 (slight water hazard)