Does ACS grade mean the material was tested by the American Chemical Society?

No. The ACS publishes the specifications but does not test or certify products. The manufacturer tests the lot against the monograph and declares conformity on its COA.

Is every chemical available in ACS grade?

No. ACS monographs cover a few hundred common reagents. If a chemical has no ACS monograph, it cannot be sold as ACS grade, and an AR or reagent grade with a manufacturer's specification is the usual alternative.

Can an ACS reagent replace a pharmacopoeial grade in a formulation?

No. ACS grade is a laboratory reagent specification. Ingredients for medicines need a pharmacopoeial grade and suitable manufacturing controls, regardless of how pure an ACS reagent may be.

Chemical grade

ACS Grade chemicals

Reagents that meet the published monographs of ACS Reagent Chemicals, a public standard for analytical reagent purity.

138 products in this grade

ACS Grade products

49–72 of 138 products

Dimethyl sulphoxide, ACS reagent, ≥99.9%

CAS: 67-68-5
Formula: C₂H₆OS
MW: 78.14 g/mol

ZX-001793

Diphenylamine, EP/Ph. Eur., ACS, AR

CAS: 122-39-4
Formula: C₁₂H₁₁N
MW: 169.22 g/mol

ZX-038620

Dithiozone, ACS, AR, for spectroscopy ≥85.00%

CAS: 60-10-6
Formula: C₁₃H₁₂N₄S
MW: 256.33 g/mol

ZX-038305

EDTA disodium salt, EP/Ph. Eur., ACS, AR

CAS: 6381-92-6
Formula: C₁₀H₁₈N₂Na₂O₁₀
MW: 372.24 g/mol

ZX-038624

EDTA disodium salt, IP/BP/USP/EP/Ph. Eur., ACS, AR 99.5%

CAS: 6381-92-6
Formula: C₁₀H₁₈N₂Na₂O₁₀
MW: 372.24 g/mol

ZX-037689

Eosine yellow, water soluble, ACS

CAS: 17372-87-1
Formula: C₂₀H₆Br₄Na₂O₅
MW: 691.9 g/mol

ZX-038264

Ethanol absolute, ACS, AR, for HPLC 99.9%

CAS: 64-17-5
Formula: C₂H₆O
MW: 46.07 g/mol

ZX-019625

Ethylenediaminetetraacetic acid, ACS reagent, 99.4-100.6%, powder

CAS: 60-00-4
Formula: C₁₀H₁₆N₂O₈
MW: 292.24 g/mol

ZX-000366

Ferrous sulphate, heptahydrate, IP/BP/USP/EP/Ph. Eur., ACS, AR

CAS: 7782-63-0
Formula: FeH₁₄O₁₁S
MW: 278.02 g/mol

ZX-037167

Gallic acid, ACS, AR

CAS: 5995-86-8
Formula: C₇H₈O₆
MW: 188.13 g/mol

ZX-038309

Gold(III) chloride, trihydrate, ACS, AR

CAS: 16961-25-4
Formula: HAuCl_4.3H₂O

ZX-038293

Hydrazine sulphate, EP/Ph. Eur., ACS

CAS: 10034-93-2
Formula: H₆N₂O₄S
MW: 130.13 g/mol

ZX-038638

Hydrogen peroxide solution 30% w/v, ACS, AR 30%

CAS: 7722-84-1
Formula: H₂O₂
MW: 34.02 g/mol

ZX-038531

Hydroxy napthol blue indicator, ACS

CAS: 165660-27-5
Formula: C₂₀H₁₂N₂Na₂O₁₁S₃
MW: 598.5 g/mol

ZX-019676

Iodine ACS reagent, ≥99.8%

CAS: 7553-56-2
Formula: I₂
MW: 253.81 g/mol

ZX-000867

Iodine monochloride, ACS, AR 98%

CAS: 7790-99-0
Formula: ClI
MW: 162.36 g/mol

ZX-037146

Iodine, USP, ACS, AR

CAS: 7553-56-2
Formula: I₂
MW: 253.81 g/mol

ZX-038645

Kalignost, GR 99.5%

CAS: 143-66-8
Formula: C₂₄H₂₀BNa
MW: 342.2 g/mol

ZX-010124

L-(+)-Tartaric acid ACS reagent, ≥99.5%

CAS: 87-69-4
Formula: C₄H₆O₆
MW: 150.09 g/mol

ZX-007570

L-(+)-Tartaric acid, IP/BP/USP/EP/Ph. Eur., ACS

CAS: 87-69-4
Formula: C₄H₆O₆
MW: 150.09 g/mol

ZX-038754

L-Ascorbic acid, ACS reagent, ≥99.5-100.5%

CAS: 50-81-7
Formula: C₆H₈O₆
MW: 176.12 g/mol

ZX-003848

L-Ascorbic acid, IP/BP/USP/EP/Ph. Eur., ACS, AR 99.7%

CAS: 50-81-7
Formula: C₆H₈O₆
MW: 176.12 g/mol

ZX-037184

Lactose monohydrate, ACS, AR ≥99.50%

CAS: 64044-51-5
Formula: C₁₂H₂₄O₁₂
MW: 360.31 g/mol

ZX-019489

Lead acetate, basic anhydrous, ACS

CAS: 51404-69-4

ZX-038669

Compare with other grades

HPLC Grade GC Grade AR Grade (Analytical Reagent)LR Grade (Laboratory Reagent)Extra Pure Grade Molecular Biology Grade Spectroscopy Grade LC-MS Grade IP Grade (Indian Pharmacopoeia)BP Grade (British Pharmacopoeia)USP Grade (United States Pharmacopeia)Ph. Eur. Grade (European Pharmacopoeia)Food Grade (FCC)Technical Grade Electronic Grade Deuterated and Stable-Isotope-Labelled Compounds Pharmaceutical Secondary Reference Standards Grades guide

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