Filo Chemical
Phosphorous Acid Flake (Low Chloride)
H3PO3

Importer and Distributor of
Specialty Chemicals

Quality Specifications

Filo Chemical
Incorporated

50 Broadway
New York, NY 
10004-1698

Purity
Iron
Phosphate (PO4)
Sulfate (SO4)
Chloride (Cl)

98.0% min
0.002% max
  0.2% max.
  0.006% max.
0.001% max

Phone: 800.232.7436
Fax: 212.514.9085
Email:
filo@filochemical.com

Physical Properties

Appearance

Molecular Weight
Melting Point

White flakes with faint
characteristic odor
82.00
~165.2°F (~73°C)

Packaging

  • 55.12# (25 kg) bag

Safety Data

CAS No.  13598-36-2
UN No.  2834