Views: 2 Author: Site Editor Publish Time: 2026-08-26 Origin: Site
When you buy a plasticizer for rubber and plastic compounds, the evaluation should not stop at the price list. DCB (diisooctyl 1,2-cyclohexanedicarboxylate, CAS 84-71-9) is a cyclohexanedicarboxylate ester supplied as a clear liquid, and a proper evaluation covers the technical data sheet (TDS), the batch certificate of analysis (COA), the supplier's supporting documents and a formulation trial in your own compound. This guide walks through each check.
The TDS is the first document a buyer should request. It defines the grade you are quoting against. The table below shows the typical DCB TDS values used for this grade.
Parameter | Value |
|---|---|
Product Name | Diisooctyl 1,2-cyclohexanedicarboxylate (DCB) |
CAS Number | 84-71-9 |
EINECS Number | 201-554-8 |
Molecular Formula | C24H44O4 |
Purity | 99% |
Content | ≥99.0% |
State | Liquid |
Density | 0.959 |
Specific Gravity (20°C) | 0.950–0.965 g/cm³ |
Color (Pt-Co) | ≤15 |
Acid Value | ≤0.1 mg KOH/g |
Flash Point | ≥190°C |
Phthalate Content | ≤0.01% |
Purity 99% and content ≥99.0% are shown as two independent rows. Purity describes the grade name, while content is the assay value measured for the ester. During evaluation, confirm that both indicators appear on the TDS and that the batch COA matches them.
The values that matter most in rubber and plastic compounds are the flash point, the specific gravity and the acid value. A flash point of ≥190°C supports safer storage and processing; a stable specific gravity of 0.950–0.965 g/cm³ at 20°C makes dosage calculation predictable; and an acid value of ≤0.1 mg KOH/g is a routine indicator of batch stability.
A reliable evaluation is based on documents, not only samples. Ask the supplier for the batch TDS, the certificate of analysis (COA) for the batch, and the safety data sheet (SDS). Check that the COA reports the same purity, content, specific gravity and flash point as the TDS before you approve a trial batch.
TDS values are reference figures; the final decision should come from a formulation trial. Test the DCB batch in the compound, at the dosage and with the processing conditions you use, and check softness, compatibility, migration and final part performance before confirming an order.
See the DCB Diisooctyl 1,2-Cyclohexanedicarboxylate Plasticizer for Rubber and Plastic Compounds product page for the current product description and availability.
DCB plasticizer is diisooctyl 1,2-cyclohexanedicarboxylate, with CAS number 84-71-9, EINECS number 201-554-8 and molecular formula C24H44O4.
This DCB grade is supplied at 99% purity with content ≥99.0%. The two values are shown as independent rows in the technical data sheet.
Check purity 99%, content ≥99.0%, specific gravity 0.950–0.965 g/cm³ at 20°C, flash point ≥190°C, acid value ≤0.1 mg KOH/g, color ≤15 Pt-Co and phthalate content ≤0.01%.
Request the batch TDS, the certificate of analysis (COA) for the batch, and the safety data sheet (SDS), and confirm the COA matches the TDS values.
No. DCB is a cyclohexanedicarboxylate ester, and the phthalate content of this grade is ≤0.01%.
Run a formulation trial at your own dosage and processing conditions, and verify softness, compatibility, migration and finished-part performance before ordering in volume.
Evaluating DCB plasticizer for rubber and plastic compounds is a four-step process: review the TDS, match the values to your compounding conditions, request the batch COA and SDS, and confirm with a formulation trial. If you are evaluating DCB for your process, contact DOBO New Energy to request the current batch TDS and discuss your application.
