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HPLC Grade Acids
Acids specfically for use in preparing HPLC buffers.
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EMD Chemicals HPLC Acids are suitable for
use in conjunction with HPLC analysis. Each HPLC grade acid meets ACS
specifications* and includes testing for UV Absorbance and various
trace metals impurities. HPLC Acids have the comprehensive
specifications which guarantee laboratory personnel the quality
assurance they demand. See below for a full listing of specifications for each of our three HPLC grade acids.
Ordering Information
HPLC Acids in Poly Coated Glass Bottles
Click on EMD No. for more detailed information
| EMD No. |
Description |
Package |
| AX0074 |
Acetic Acid, Glacial, ACS- HPLC |
Poly-coated Glass Bottle |
| PX0996 |
Phosphoric Acid, ACS- HPLC |
Poly-coated Glass Bottle |
| TX1276 |
Trifluoroacetic Acid, HPLC |
Poly-coated Glass Bottle |
|
Acetic Acid, Glacial ACS-HPLC Grade
| Test |
Specification |
| Assay |
99.7% Minimum |
| Acetic anhydride |
0.01% max |
| Color (APHA) |
10 max |
| Chloride |
0.4 ppm max |
| Copper |
0.1 ppm max |
| Dilution Test |
To pass test |
| Heavy Metals (as Pb) |
0.5 ppm max |
| Iron |
0.2 ppm max |
| Nickel |
0.1 ppm max |
| Residue after evaporation |
5 ppm max |
| Substances reducing dichromate |
To pass test |
| Substances reducing permanganate |
To pass test |
| Sulfate |
0.4 ppm max |
| Titratable base |
0.0004 meq/g max |
UV Absorbance
(1-cm cell vs. water) |
0.02 AU max at 350nm
0.05 AU max at 280nm
1.0 AU max at 255nm |
| Water |
0.1% max |
o-Phosphoric Acid ACS-HPLC Grade
| Test |
Specification |
| Assay |
85.0% Minimum |
| Antimony |
0.002% max |
| Arsenic |
0.5 ppm max |
| Color (APHA) |
10 max |
| Chloride |
3 ppm max |
| Heavy Metals (as Pb) |
0.001% ppm
max |
| Insoluble
matter, calcium, magnesium and ammonium hydroxide precipitate
|
0.005% max |
| Iron |
0.003% max |
| Manganese |
0.5 ppm max |
| Nitrate |
5 ppm max |
| Phosphorous
& Hypophosphorous acid |
To pass test |
| Potassium
|
0.005% max |
| Sodium |
0.025% max |
| Reducing
substances |
To pass test |
| Sulfate |
0.001% max |
UV Absorbance
(1 M, 1 cm, water) |
0.02 AU max
at 300nm
0.04 AU max at 254nm
0.05 AU max at 220nm |
| Volatile
acids (as CH3COOH) |
0.001% max |
Trifluoroacetic Acid HPLC Grade*
| Test |
Specification |
| Assay |
99.9% Minimum |
| Chloride |
0.001% max |
| Color (APHA) |
5 max |
| Fluoride (F) |
0.001% max |
| Iron (FE) |
0.0001% max |
| Residue after evaporation |
0.0002% |
| Sulfate (SO4) |
0.001% |
| Trifluoroacetic anhydride |
None detected |
| UV Absorbance (0.1%, 1 cm, water) |
0.15 AU max at 230nm
0.01 AU max at 254nm |
| Water |
0.05% max |
*No ACS specification for Trifluoroacetic acid
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