Aluminum hypophosphite flame retardant has a high decomposition temperature and is insoluble in water. Its phosphorus content exceeds 40% per molecular weight, making it a rare high-phosphorus flame retardant among flame retardant monomers. Its flame retardancy primarily involves condensed phase and atmospheric flame retardancy. It typically achieves flame retardancy synergistically with nitrogen- and bromine-containing flame retardants. It can typically be compounded with melamine cyanurate (MCA), melamine hydrobromide (MHB), and linalool to achieve flame retardancy. Aluminum hypophosphite is produced from raw materials such as sodium hypophosphite and aluminum sulfate. Its price is influenced by factors such as raw material price trends and supply and demand.

I. Basic Information

English Name: Aluminium hypophosphite; Phosphinic acid iodine salt; AHP

Chemical Formula: Al(H2PO2)3

CAS No.: 7784-22-7

H.S. No.: 28351000

Molecular Weight: 221.96

Implementation Standard: HG/T4833-2015

Appearance: White powder, slightly soluble in water.

II. Specifications

Aluminum hypophosphite Assay%≥98.0

Phosphorus%≥ 40.0

Particle Size (D50)μm: 3-5

Particle Size (D98)μm≤20

Whiteness≥98

Chloride %≤0.005

Water %≤0.5

pH: 3-5

1% Decomposition Temperature≥300℃

III. Applications

1. When combined with melamine hydrobromide (MHB) or melamine polyphosphate (MPP), it can be used as a flame retardant for polypropylene (PPV)-2. Adding 0.5-1% of the composite flame retardant achieves flame retardancy.

2. Aluminum hypophosphite flame retardant can be used with melamine cyanurate (MCA) and melamine polyphosphate (MPP) to flame retard low-smoke, halogen-free cable materials. It exhibits excellent flame retardancy in data cables and flexible cords.

3. It can be used as a flame retardant for polyester (PBT). The formulation and synergist are critical, otherwise polyester products will easily yellow and develop spots.

4. When combined with other flame retardants, it can be used as a flame retardant for potting compounds.

IV. Storage and Transportation Conditions

25 kg/bag. Store in a cool, dry, ventilated warehouse, away from alkaline chemicals, flammable chemicals, and oxidizing chemicals. Avoid violent contact, friction, impact, or squeezing, as this may cause a fire.

Aluminum hypophosphite's particle size distribution, crystal form, surface modification, production process, and temperature resistance significantly influence its flame retardant effectiveness. This results in varying results when applied to the same material using AHP flame retardants from different manufacturers. Aluminum hypophosphite flame retardants are classified as Class 4.1 hazardous chemicals, requiring commodity inspection and hazardous packaging for export. Export tax rebates are not available. They are generally not suitable for flame retardant applications in nylon, polyurethane, rubber, coatings, wood, or paper.