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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

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Physical & Chemical properties


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Description of key information

The dynamic viscosity of Tetrakis(hydroxymethyl) phosphonium chloride, oligomeric reaction products with urea was determined at 20°C and 40°C according to the OECD TG 114 using a rotating cylinder viscosimeter. The dynamic viscosity of test material was measured for shear rates from about 5 s-1to 20 s-1at 20 °C and from about 10 s-1to 140 s-1at 40 °C. The viscosity values varied with the shear rate, e.g. at 20 °C from 4.06 * 105mPa·s at 4.9 s-1 to 3.69 * 105mPa·s at 20 s-1 and at 40 °C from 6.53 * 104mPa·s at 9.93 s-1 to 5.18 * 104mPa·s at 140 s-1. This indicates that Tetrakis(hydroxymethyl) phosphonium chloride, oligomeric reaction products with urea is a non-Newtonian fluid. The arithmetic mean (3.88 x 10^5 mPa.s) of the range value measured at 20°C is taken as key value for the chemical safety assessment.

Key value for chemical safety assessment

38 800 mPa · s (dynamic)
at the temperature of:
20 °C

Additional information

Based on the measurement of the dynamic viscosity on a similar compound, the registered reaction product has to be considered as a non Newtonian fluid.