How to Read MDEA Viscosity Data Before Ordering

Your engineering team needs viscosity data to review a proposed N-methyldiethanolamine (MDEA, CAS 105-59-9) grade for the plant’s transfer equipment. One supplier lists a value in mPa·s, while another uses mm²/s. Before comparing the figures, check the viscosity type, measurement temperature and product concentration.

Keep the temperature with the value

A published MDEA technical data sheet lists dynamic viscosity of 101 mPa·s at 20 °C. Keep the temperature alongside the number when sharing it with your engineering team. If the team needs data at a different receiving or transfer temperature, request that information for the proposed grade. amines.com

Identify dynamic and kinematic viscosity

Dynamic viscosity is commonly reported in mPa·s or centipoise (cP). Those units have the same numerical value.

Kinematic viscosity is commonly reported in mm²/s or centistokes (cSt). It equals dynamic viscosity divided by the liquid density at the same temperature. To convert between the two using these units, apply the following relationship. kinematic viscosity (K03395)

Kinematic viscosity (mm²/s) = dynamic viscosity (mPa·s) ÷ density (g/cm³)

For an illustrative calculation, a liquid with a dynamic viscosity of 101 mPa·s and a density of 1.04 g/cm³, both at the same temperature, has a kinematic viscosity of approximately 97.1 mm²/s.

Match the data to the quoted grade

Check whether the data describes concentrated MDEA, an aqueous solution or a formulated solvent. Record the concentration, temperature and test method with the result. Also ask whether the viscosity is a typical property or a guaranteed specification. If your purchase order requires a viscosity limit, have the supplier confirm the limit and test conditions before ordering.

Request MDEA data for your receiving conditions

Send China Amines Co., Limited your required grade, concentration, expected receiving temperature, net quantity, preferred packaging and destination port. Include the viscosity information your engineering team needs so we can check the available technical data alongside the quotation.

Inquiries
info@chinaamines.com