China Amines Co., Limited

A purchasing record lists dimethylamine 40% aqueous solution in kilograms. A storage record shows liquid volume in liters.

To compare the two, use the actual liquid volume and a suitable density value at the same temperature. Recording those details makes the calculation easier to check.

Multiply volume by the matching density

The basic calculation is:

Solution mass (kg) = Liquid volume (L) × Density (kg/L)

Sigma-Aldrich lists a density of 0.89 g/mL at 25°C for its nominal 40 wt.% dimethylamine solution. This equals 0.89 kg/L. The value describes that supplier’s product and provides a useful calculation example.

Using that reference value, 1,000 L at 25°C corresponds to approximately 890 kg of solution.

For a commercial shipment, obtain the appropriate density information for the supplied grade.

Keep temperature attached to the measurement

Liquid density and volume depend on temperature. A density reported at 25°C should be used with a volume measured or corrected to that temperature.

If the available records use different temperatures, ask the technical team for an appropriate correction method or matching density data.

Keep the temperature and density source beside the calculation so another person can reproduce it.

Calculate contained DMA separately

Once the solution mass is established, multiply it by the DMA mass fraction:

Contained DMA (kg) = Solution mass (kg) × DMA mass fraction

For an illustrative calculation using 890 kg of solution at exactly 40.0%:

890 × 0.40 = 356 kg of contained DMA

Use the accepted batch assay when reconciling an actual delivery.

Confirm the actual liquid volume

A container’s nominal capacity describes the container size. Confirm the actual fill volume before converting it into product mass.

When weighing records are available, review gross weight and tare weight to establish net product weight. Agree on the quantity determination method before delivery, particularly when invoices and receiving records use different units.

Request DMA 40% quantity information

Contact China Amines Co., Limited with your required net quantity, approved specification, packaging preference, and destination.

If your requirement is expressed in liters, include the reference temperature and request suitable density information for the proposed supply.

Inquiries: info@chinaamines.com

Technical references

• Sigma-Aldrich — Dimethylamine Solution 40 wt.%: Density and Product Data
• Thermo Scientific — Dimethylamine, 40% w/w Aqueous Solution: Product Specification