How to Trace C12–14 Alkyldimethylamine Through a Production Batch

China Amines Co., Limited

An amine oxide batch comes out darker than expected. Purchasing pulls the certificate of analysis from the latest delivery. Production checks the batch record and discovers that the reactor was charged with material from two different deliveries. The first useful question is simple: Which raw material lots actually went into the batch?

C12–14 alkyldimethylamine is a fatty tertiary amine intermediate. Eastman lists its DIMLA™ 1214 grade as a feedstock for producing amine oxides, among other derivatives. The feedstock and the resulting amine oxide have separate batch records. Linking those records gives the investigation a starting point.

Follow the material from the reactor back to receiving

Start with the affected amine oxide batch number. Use the production record to identify each tertiary amine lot charged and the amount drawn from each. If the plant feeds the line from a shared tank, review the transfer records for that tank, including any material remaining from an earlier delivery. Match the identified lots to their receiving records and certificates of analysis.

Then compare the affected batch with a recent batch that met the same appearance specification. Check whether it used any of the same feedstock lots and what else changed in the process. If retained samples are available, use their labels and records to confirm which lots they represent before deciding what to retest. That lets the team investigate a material change alongside other possibilities, such as an equipment or process change.

Give your supplier a lot number to work with

When contacting China Amines about a C12–14 alkyldimethylamine shipment, include the grade, supplier lot number, delivery reference and the specific observation. If two lots entered the same batch, list both and indicate how much of each was used, if known. Those details let both teams compare the same records and identify which additional information would help.

Technical reference
Eastman — DIMLA™ 1214 Technical Data Sheet