Red Phosphorus HB 400
Stabilised and microencapsulated red phosphorus, delivered as a wet filter cake

Red Phosphorus HB 400

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

Edition Date :
July 16, 2020
Red Phosphorus HB 400 is a stabilised and microencapsulated grade of red phosphorus, delivered as a wet filter cake with 15-25% moisture. It has a good oxidation and thermal stability. Red Phosphorus HB 400 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 Highly flammable. Explosive when mixed with oxidizing substances. Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. 

Hazard class Hazard category H-phrases
Flammable solids Flammable solid
Serious eye damage/eye irritation Category 2 Causes serious eye irritation
Chronic aquatic toxicity Category 3 Harmful to aquatic life with long lasting effects
Characteristics   Unit   Target value   DS¹) TD²) Test method 
Red Phosphorus  %(w/w)   88 - 92  

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

Volatile Content  %(w/w)   15.0 - 25.0  

Thermogravimetry; (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  µm    

Laser diffraction, release by customer; (11/47)  
  D10   max. 10        
  D50   max. 20        
  D90   max. 63        
¹) Delivery specification: The product is constantly monitored 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 stabilisation and microencapsulation Red Phosphorus HB 400 is suitable for pyrotechnical applications.
Delivery form
Wet style filter cake with 15-25% moisture

Red Phosphorus is supplied in 200 liter, full open-head steel drums. The grade HB 400 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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Alexis Dudley
Alexis Dudley
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This information corresponds to the present state of our knowledge and is intended as a general description of our products and their possible applications. Clariant makes no warranties, express or implied, as to the information’s accuracy, adequacy, sufficiency or freedom from defect and assumes no liability in connection with any use of this information. Any user of this product is responsible for determining the suitability of Clariant’s products for its particular application.<br />
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