Aqueous Dimethylamine Carbon Footprints: Compare the Basis
2026-11-11
Comparing Carbon Footprints of Aqueous Dimethylamine: Start with the Product Basis
China Amines Co., Limited
Two aqueous dimethylamine offers arrive with product carbon footprint figures. One concerns a 40% solution; the other concerns a 60% solution.
Can the buyer compare the two numbers directly?
First, establish what each number represents. A footprint reported per kilogram of solution uses a different denominator from one expressed per kilogram of contained DMA. The calculation boundary also needs to match.
Even a well-prepared spreadsheet needs a clearly labelled denominator.
1. Identify the Product Behind the Footprint
Product carbon footprint, or PCF, data should be associated with a defined product and calculation basis.
Together for Sustainability provides chemical-industry guidance intended to harmonize cradle-to-gate PCF calculations.[1] BASF’s published methodology, for example, defines a declared unit of one kilogram of unpackaged product at the factory gate.[2] These references demonstrate why the product description and declared unit belong beside the reported value. TFS Initiative
For aqueous DMA, the description should identify the concentration as well as the material name.
2. Check Where the Calculation Starts and Ends
BASF describes a cradle-to-gate footprint as covering resource extraction, precursor manufacturing and production up to the product leaving the factory gate.[3] chemicals.basf.com
Its published methodology separately identifies exclusions, including outbound transport to customers.[2] A buyer comparing factory-gate and delivered-product figures therefore needs to reconcile their boundaries. chemicals.basf.com
Useful questions include:
- Which production site and reporting period does the value represent?
- What concentration and product grade are covered?
- What declared unit is used?
- How are packaging and customer delivery treated?
- Which methodology and review status accompany the data?
3. A Hypothetical Concentration Example
The following figures demonstrate arithmetic only. They are not China Amines emissions data or supplier benchmarks.
Assume two hypothetical solutions each have a reported footprint of 1.00 kg CO₂e per kilogram of solution:
| Hypothetical product | DMA mass fraction | Footprint per kg of solution | Solution footprint normalized per kg of contained DMA |
|---|---|---|---|
| Solution A | 40% | 1.00 kg CO₂e | 2.50 kg CO₂e |
| Solution B | 60% | 1.00 kg CO₂e | Approximately 1.67 kg CO₂e |
The normalization is:
\[ \text{Footprint normalized to contained DMA} = \frac{\text{Footprint per kg of solution}}{\text{DMA mass fraction}} \]
For Solution A, the calculation is \(1.00 ÷ 0.40 = 2.50\).
This allocates the solution’s reported footprint across its contained DMA mass. Label the result accordingly and retain the original system boundary.
4. Keep the Interpretation Attached to the Calculation
The normalized indicator still includes the emissions assigned to the complete solution. It does not establish the footprint of manufacturing anhydrous DMA, which would require its own product-system assessment.
The hypothetical table also does not establish that a higher-concentration grade is environmentally preferable in a real purchase. That assessment needs actual product data, consistent boundaries and the customer’s process requirements.
Arithmetic can align a denominator. It cannot supply missing production or delivery information.
5. Request Data You Can Trace
For an aqueous DMA enquiry involving carbon information, request the available product-specific documentation and its reporting basis.
Record the original PCF value separately from any buyer-calculated normalization. Identify assumptions, data gaps and added delivery calculations so another reviewer can reproduce the comparison.
This gives purchasing and sustainability teams a clearer basis for evaluating the evidence and deciding what further information is needed.
References
- Together for Sustainability — Product Carbon Footprint Guideline
- BASF — Published PCF Calculation Methodology
- BASF — Product Carbon Footprint Customer Information
About China Amines
For aqueous dimethylamine enquiries, contact China Amines with your required concentration, application, quantity and destination. Include any product carbon footprint documentation requirements so that information availability and scope can be clarified during the enquiry.