Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Sodium Hydroxide 50% Membrane Grade (Caustic Soda, Lye)
Membrane Grade · 50%
Sample COA. Contact Alliance Chemical with your lot number to request a lot-specific COA.
- CAS番号
- 1310-73-2
- 構造
構造・PubChem - グレード
- Membrane Grade · 50%
- Assay specification
- 49.5 – 51.5 WT. %
- Answer summary
Sample specification reference for Sodium Hydroxide 50% Membrane Grade (Caustic Soda, Lye). Source-record results are reference values, not measurements for your lot.
Last reviewed 2026-07-06 by Andre Taki, Chief Commercial Officer, DOT Hazmat–certified (49 CFR 172.704).
Specifications
| Parameter | Specification | Source reference result | Test Method |
|---|---|---|---|
| Assay, sodium hydroxide (NaOH) | 49.5 – 51.5 WT. % | 50.3 WT. % | Titrimetry |
| Sodium Chloride (NaCl) | 100 PPM max. | 23 PPM | Turbidimetry |
| Iron (Fe) | 3 PPM max. | 0.57 PPM | Colorimetry |
| Sodium Carbonate (Na2CO3) | 0.1 WT. % max. | 0.045 WT. % | Titrimetry |
| Sodium chlorate (NaClO3) | 40 PPM | 40 PPM | Ion Chromatography |
| Sodium sulfate (Na2SO4) | 40 PPM | 8.8 PPM | Ion Chromatography |
| Nickel (Ni) | 1.0 PPM Max | 0.21 PPM | ICP-OES |
| Mercury (Hg) | 0.05 PPM Max | 0.0013 PPM | Cold vapor AAS |
| Color (APHA) | Max 20 | 10 | ASTM D1209 (Pt-Co) |
| Specific gravity @ 20 C | 1.520 - 1.540 | 1.533 | ASTM D891 / hydrometer |
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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