Grade guide
ACS Grade chemicals
Reagents that meet the specifications of ACS Reagent Chemicals, published by the American Chemical Society, for demanding analytical work.
138 ACS Grade products
Cadmium Chloride Dried Anhydrous, ACS, AR, specially dried
- CAS
- 10108-64-2
- Formula
- CdCl2
- MW
- 183.32 g/mol
VQ-020357
Carbon glassy, spherical powder, 2-12 μm, BP/USP/EP/Ph. Eur., ACS
- CAS
- 7440-44-0
- Formula
- C
- MW
- 12.01 g/mol
VQ-046110
Carboxymethylcellulose sodium salt, high viscosity, ACS
- CAS
- 9004-32-4
- Formula
- C8H16NaO8
- MW
- 263.2 g/mol
VQ-046613
Chloroplatinic acid hexahydrate, ACS reagent, ≥37.50% Pt basis
- CAS
- 18497-13-7
- Formula
- H2PtCl6.6H2O
- MW
- 517.9 g/mol
VQ-015385
Chromotropic acid disodium salt, EP/Ph. Eur., ACS, AR
- CAS
- 5808-22-0
- Formula
- C10H10Na2O10S2
- MW
- 400.3 g/mol
VQ-047119
Citric acid monohydrate, IP/BP/USP/EP/Ph. Eur., ACS, AR
- CAS
- 5949-29-1
- Formula
- C6H10O8
- MW
- 210.14 g/mol
VQ-046550
Cobalt(II) chloride, hexahydrate, ACS reagent, 99%+
- CAS
- 7791-13-1
- Formula
- Cl2CoH12O6
- MW
- 237.93 g/mol
VQ-014573
Cobalt(II) nitrate, hexahydrate, ACS reagent, ≥98%
- CAS
- 10026-22-9
- Formula
- CoH12N2O12
- MW
- 291.04 g/mol
VQ-014577
Copper(II) nitrate hemi(pentahydrate), ACS reagent, 98%
- CAS
- 19004-19-4
- Formula
- Cu2H10N4O17
- MW
- 465.19 g/mol
VQ-014613
Cupric sulphate, pentahydrate, BP/USP/EP/Ph. Eur., ACS, AR
- CAS
- 7758-99-8
- Formula
- CuH10O9S
- MW
- 249.69 g/mol
VQ-047127
FAQs
Who sets ACS grade specifications?
The American Chemical Society publishes them in Reagent Chemicals, a compendium of monographs giving purity requirements and test methods for laboratory reagents.
Is ACS grade better than AR grade?
Not always purer, but more standardised. ACS refers to published limits, while AR limits are set by each manufacturer.
Can ACS grade be used as a pharmaceutical ingredient?
No. ACS is a reagent standard. Ingredients in medicines should meet the relevant pharmacopoeial monograph with appropriate regulatory documentation.
Other grades
HPLC GradeGC GradeAR Grade (Analytical Reagent)LR Grade (Laboratory Reagent)Extra Pure GradeMolecular Biology GradeSpectroscopy GradeLC-MS GradeIP Grade (Indian Pharmacopoeia)BP Grade (British Pharmacopoeia)USP Grade (United States Pharmacopeia)Ph. Eur. Grade (European Pharmacopoeia)Food Grade (FCC)Technical GradeElectronic GradeDeuterated & Stable-Isotope-Labelled CompoundsPharmaceutical Secondary Reference Standards
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