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Stabilized and microencapsulated red phosphorus, delivered as a wet filter cake

Red Phosphorus HB 600

Red Phosphorus HB 600 is a stabilized and microencapsulatedgrade of red phosphorus, delivered as a wet filter cake with 9-25% moisture (mean value for all drums of one delivery max. 20% moisture). It has a good oxidation and thermal stability. Red Phosphorus HB 600 is a brownish-red powder that is insoluble in water and organic solvents.

  • Very good oxidation and thermal stability
  • Suitable for pyrotechnical applications
For regulatory details such as the classification and labelling as dangerous substances or goods please refer to our corresponding Material Safety Data Sheet.

As stated in the safety data sheet of the substance the use “industrial manufacture of screening smoke ammunition or smoke payloads” is advised against within the EU according to the REACH regulation. Therefore, every manufacturer of smoke ammunition or smoke payloads is obliged to create a chemical safety assessment for these uses and to inform the ECHA accordingly.

Category of danger/Category Hazard symbol R-phrases 
 Highly flammable, IrritantHighly flammable. Explosive when mixed with oxidizing substances. May cause sensitization by skin contact. Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. 

Hazard class Hazard category        H-phrases
Flammable solids  Flammable solid.
Skin sensitizationCategory 1May cause an allergic skin reaction
Chronic aquatic toxicityCategory 2Harmful to aquatic life with long lasting effects.


Unit   Target value   DS¹) TD²)  Test method 
Red Phosphorus  %(w/w)   min. 91.0  

Gravimetry after extraction using HCl, on dry basis; (11/69)  
White Phosphorus  %(w/w)   < 0.02  

On dry basis  
Volatile Content  %(w/w)   9 - 25 (separate drums), max. 20 (mean value of all drums)  

Thermogravimetry, as filter cake; (11/03)  
Density  g/cm³   approx. 2.0  

20 °C, on dry basis  
Bulk Density  g/cm³   0.8 - 1.2  

As filter cake  
pH Value    min. 6  

10% Suspension in acetone/water, potentiometry; (11/12)  
Particle Size Distribution  % (w/w)    

Laser diffraction, release by customer, calculated on dry basis; (11/47)  
  <10 µm   max. 45        
  < 400 µm   min. 99.5        

¹) Delivery specification: The product is monitored on a regular basis to ensure that it adheres to the specified values. Test methods: Clariant method numbers 11/xx in brackets.
²) Technical data: The technical data are used solely to describe the product and are not subject to regular monitoring  
Owing to its special stabilization and microencapsulation Red Phosphorus HB 600 is suitable for pyrotechnical applications.
Packaging and Handling
Delivery form
Wet style filter cake with 9-25% moisture

Red Phosphorus is supplied in 200 liter, full open-head steel drums. The grade HB 600 is supplied with a 150 kg fill weight. Each drum has a ring-type lid closure.

Minimum shelf life is 12 months from the date of shipping when stored according to the said conditions.

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Red Phosphorus HB 600

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