Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
60/40 Methanol/DI Water Solution ACS Grade
ACS Grade · 60/40
Sample COA. Contact Alliance Chemical with your lot number to request a lot-specific COA.
- CAS number
- 67-56-1
- Structure
Structure · PubChem - Grade
- ACS Grade · 60/40
- Assay specification
- 59.5 - 60.5 % (v/v)
- Answer summary
Sample specification reference for 60/40 Methanol/DI Water Solution ACS Grade. Source-record results are reference values, not measurements for your lot.
Last reviewed 2026-06-30 by Andre Taki, Chief Commercial Officer, DOT Hazmat–certified (49 CFR 172.704).
Specifications
| Parameter | Specification | Source reference result | Test Method |
|---|---|---|---|
| Assay (methanol) | 59.5 - 60.5 % (v/v) | 60.0 % | Specific gravity at 20 °C (ASTM D4052) read against the methanol–water density table; GC confirmation on request |
| Water | 39.5 - 40.5 % (v/v) | 40.0 % | By difference from the methanol assay; Karl Fischer (ASTM E1064) on request |
| Ultraviolet absorbance at 205nm | 0.60 max | 0.42 | UV spectrophotometry, 1-cm cell against water (ACS) |
| Ultraviolet absorbance at 210nm | 0.48 max | 0.21 | UV spectrophotometry, 1-cm cell against water (ACS) |
| Ultraviolet absorbance at 220nm | 0.24 max | 0.071 | UV spectrophotometry, 1-cm cell against water (ACS) |
| Ultraviolet absorbance at 230nm | 0.12 max | 0.025 | UV spectrophotometry, 1-cm cell against water (ACS) |
| Ultraviolet absorbance at 240nm | 0.06 max | 0.011 | UV spectrophotometry, 1-cm cell against water (ACS) |
| Ultraviolet absorbance at 260nm | 0.02 max | 0.004 | UV spectrophotometry, 1-cm cell against water (ACS) |
| Ultraviolet absorbance at 280nm – 400nm | 0.01 max | 0.002 | UV spectrophotometry, 1-cm cell against water (ACS) |
| Identification | Conforms | Passes test | IR spectrum or GC retention time against reference methanol |
| Titrable Acid | 0.00016 meq/g max | 0.000039 meq/g | — |
| Titrable Base | 0.00011 meq/g max | 0.000014 meq/g | — |
| Carbonyl compounds (acetone, formaldehyde, acetaldehyde, each) | 0.00054 % max | 0.00009 % | — |
| Residue After Evaporation | 0.00063% max | 0.00013 % | — |
| Color (APHA) | max 10 | 3 | — |
| Appearance | Clear, colorless, Free of foreign matter | Passes test | — |
| Substances reducing permanganate | Pass Test | Passes test | — |
| Composition | 60 % methanol / 40 % deionized water, by volume | Conforms | By formulation; confirmed by specific gravity |
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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