Industrial chemicals · Taylor, TXCertificate of Analysis
Sample Certificate of Analysis
Potassium Bicarbonate - FCC USP Grade
USP Grade
Sample COA. Contact Alliance Chemical with your lot number to request a lot-specific COA.
- CAS number
- 298-14-6
- Structure
Structure · PubChem - Grade
- USP Grade
- Assay specification
- 99.5 - 101.5 %
- Answer summary
Sample specification reference for Potassium Bicarbonate - FCC USP Grade. Source-record results are reference values, not measurements for your lot.
Last reviewed 2026-06-17 by Andre Taki, Chief Commercial Officer, DOT Hazmat–certified (49 CFR 172.704).
Specifications
| Parameter | Specification | Source reference result | Test Method |
|---|---|---|---|
| Assay (KHCO3, dried basis) | 99.5 - 101.5 % | 100.3 % | Acidimetric titration with 1 N hydrochloric acid VS using methyl red TS (1 mL = 100.1 mg KHCO3) |
| Description / Appearance | Colorless, transparent, monoclinic prisms or white, granular powder; stable in air | Passes test | Visual |
| Arsenic (as As) | 1.5 ppm by wt. Max. | 0.045 ppm by wt. | Elemental impurities (USP <232>/<233> style ICP determination) |
| Cadmium (as Cd) | 0.2 ppm by wt. Max. | 0.007 ppm by wt. | Elemental impurities (USP <232>/<233> style ICP determination) |
| Carbonate (FCC limit test) | Passes test (solution does not immediately turn more than a faint pink color) | Passes test | Dissolve 1 g without agitation in 20 mL water at not above 5 degrees C, add 2 mL 0.1 N hydrochloric acid and 2 drops phenolphthalein |
| Heavy Metals (as Pb) | 5 ppm max | 0.8 ppm | — |
| Identification | A 1:10 aqueous solution gives positive tests for Potassium and for Bicarbonate | Passes test | Chemical identity tests for Potassium and for Bicarbonate on a 1:10 aqueous solution |
| Lead (Pb) | Not more than 2 mg/kg | 0.057 mg/kg | APDC Extraction Method under Lead Limit Test, FCC Appendix IIIB |
| Loss on Drying | Not more than 0.25 % | 0.061 % | Dried over silica gel for 4 hours (FCC Appendix IIC) |
| Loss on Drying - USP acceptance criterion | Not more than 0.3 % | 0.061 % | Dry over silica gel for 4 hours |
| Mercury (as Hg) | 0.3 ppm by wt. Max. | 0.010 ppm by wt. | Elemental impurities (USP <232>/<233> style ICP determination) |
| Normal Carbonate | max. 2.5% | 0.35 % | — |
| Residual Solvents | Meets Requirements | Passes test | USP <467> (not required where no solvents are used in manufacture) |
| Bulk Density (informational, not a specification) | ~64 lb/cu.ft (published as informational only, not a specification item) | Passes test | Loose bulk density |
| pH (1% w/v aqueous solution @ 25 C) | 8.0 - 8.6 | 8.2 | USP <791> / potentiometric, calibrated glass electrode |
| Chloride (as Cl) | 0.001 % max | 0.0006 % | USP <221> chloride limit test / argentometric titration |
| Sulfate (as SO4) | Not more than 0.01 % | 0.0014 % | USP <221> sulfate limit test, turbidimetric against standard |
| Iron (Fe) | Not more than 5 mg/kg | 0.30 mg/kg | ICP-OES (FCC iron limit test) |
| Screen Analysis (sieve) | 100 % through 20 mesh (850 um); not more than 10 % through 200 mesh (75 um) | Passes test | ASTM E11 sieve stack / Ro-Tap, 10 min |
| calcium | 0.002 % max | 0.00018 % | — |
| insoluble | 0.01 % max | 0.0017 % | — |
| magnesium | 0.001 % max | 0.00013 % | — |
| tot. alk | 99.5 - 101.5 Wt.% | 100.3 Wt.% | — |
| cd | 0.2 Wt.ppm max | < 0.01 | — |
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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