Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Perchloroethylene ACS Grade
ACS Grade
Sample COA. Contact Alliance Chemical with your lot number to request a lot-specific COA.
- CAS number
- 127-18-4
- Structure
Structure · PubChem - Grade
- ACS Grade
- Assay specification
- ≥99.0% C2Cl4
- Answer summary
Sample specification reference for Perchloroethylene ACS Grade. Source-record results are reference values, not measurements for your lot.
Last reviewed 2026-07-17 by Andre Taki, Chief Commercial Officer, DOT Hazmat–certified (49 CFR 172.704).
Specifications
| Parameter | Specification | Source reference result | Test Method |
|---|---|---|---|
| Assay (C2Cl4) | ≥99.0% C2Cl4 | 99.97 % | Gas chromatography; Type I, methyl silicone column |
| Color (APHA) | APHA: ≤10 | 5 | — |
| Residue after evaporation | ≤0.0005 % | 0.00009 % | — |
| Ultraviolet absorbance at 300 nm | 1.0 AU | 1.0 AU | Ultraviolet Spectrophotometry |
| Ultraviolet absorbance at 305 nm | 0.2 AU | 0.2 AU | Ultraviolet Spectrophotometry |
| Ultraviolet absorbance at 350 nm | 0.05 AU | 0.05 AU | Ultraviolet Spectrophotometry |
| Ultraviolet absorbance at 400 nm | 0.03 AU | 0.03 AU | Ultraviolet Spectrophotometry |
| Water (H2O) | ≤0.05 % | 0.009 % | — |
| Identification (FTIR) | Conforms to reference spectrum of tetrachloroethylene | Passes test | FTIR-ATR, comparison to reference spectrum |
| Titrable acid | 0.0005 meq/g max. | 0.000020 meq/g | Potentiometric titration with 0.01 N NaOH |
| Free halogens (as Cl) | Passes test | Passes test | Potassium iodide - starch test |
| Boiling range | 120 - 122 °C | 121 °C | ASTM D1078 (atmospheric distillation) |
| Density @ 20 °C | 1.619 - 1.626 g/mL | 1.6226 g/mL | ASTM D4052 (oscillating U-tube) |
| Refractive index, n20/D | 1.5045 - 1.5065 | 1.5058 | ASTM D1218 / Abbe refractometer |
Specification limits and source-record results are reproduced from the current product reference used by the TDS. This sample is not an issued certificate and does not identify a tested lot. Contact Alliance Chemical with the product and lot number for lot-specific documentation.
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