Hummel Croton Inc.
10 Harmich Road
South Plainfield, NJ 07080

Tel: 908-754-1800
Fax: 908-754-1815

Data Sheet
Melamine Pyrophosphate

Product Code 13-1100 13-1105 13-1115
Appearance White Fine
White Coarse
White X-Fine
Purity by HPLC* >98% >98% >98%
Moisture < 0.5% < 0.2% < 0.5%
Acid Value 255 ± 15 255 ± 15 255 ± 15
25% Slurry By Wt
• Conductivity
• pH
• Chlorides

< 500 μ S/cm
3.8 ± 0.4
< 100 ppm

< 500 μ S/cm
3.8 ± 0.4
< 100 ppm

< 500 μ S/cm
3.8 ± 0.4
< 100 ppm
Granulation -100 mesh -20 mesh -325 mesh
CoulterĀ® LS Particle Size
• Particle Diameter 100%
• Mean Particle Diameter

60 μ
15 μ


20 μ
3.5 μ
TGA wt. Loss @ 300 ° C < 0.05% < 0.05% < 0.05%
TGA wt. Loss @ 350 ° C < 6.0% < 6.0% < 6.0%

PACKAGING:250 lb. drum

USES: Melamine pyrophosphate is an excellent non-halogen chemical useful in various fabrics, nylons, paint, paper and plastics as a flame retardant. It is compatible with melamine-urea formaldehyde systems. It has shown uses in the electronic industry when incorporated in the manufacturing of circuit boards and other equipment. In addition, melamine pyrophosphate can be used with epoxy and other adhesive compositions to achieve fire retardant barriers in gluelines in wood and plastic laminates. Melamine pyrophoshate is useable with di-pentaerythrytol as well as polyolefins. Also useable in SMC process (unsaturated polyester resins). Melamine pyrophosphate can be partially used instead of ammonium polyphosphate (as a spumescent and a catalyst) in some intumescent applications.

Because of the synergism of the combination of the byproducts of melamine pyrophosphate (i.e., phosphorus and nitrogen), only a small quantity is required in formulations. Due to acidic catalysis, inert gas formation and foaming, flames are retarded or eliminated. Melamine pyrophosphate does not contribute to the formation of toxic gases.

HANDLING: Store in sealed containers at room temperature. Use dust respirator when handling. Since no exposure limit have been established for melamine pyrophosphate by OSHA & ACGIH, we recommend that our product should be treated as a nuisance dust 15 mg/mĀ³. See SDS for more information.

PROPER SHIPPING NAME: Melamine Pyrophosphate


Melamine Pyrophosphate

CAS Number 15541-60-3
Molecular Wt. 430.23
Phosphorous Content approx 14.4%
Nitrogen Content approx 39.0%
EINEC Number 239-590-1
Molecular Formula C6H16N12P2O7
P2O5 33.0%
Water Solubility g/100 ml 0.06%
No warranty, expressed or implied, or merchantability, fitness for a particular purpose or otherwise is made, except that the products herein discussed comply with the chemical description on the labels. Buyer assumes risks of the use, storage and handling. Hummel shall not be liable for any incidental or consequential damages arising directly or indirectly in connection with the purchase, use, storage or handling of this product. The information contained herein is, to the best of our knowledge, true and accurate. However, all recommendations or suggestions are made without guarantee, since the conditions of use are beyond our control. We disclaim any liability incurred in connection with the use of these data or suggestions. This information is not to be taken as a license to operate under, or a recommendation to infringe any patent(s). The observance of all regulations and patents is the responsibility of the user. No agent, representative or employee of this company is authorized to vary any terms of this notice.