Is extra pure material tested to a pharmacopoeia?

Not necessarily. Extra pure is a reagent grade defined by the producer. If you need a pharmacopoeial grade, ask for IP, BP, USP or Ph. Eur. material, and the COA will name the monograph.

How do I compare extra pure products from different producers?

Put the specifications side by side and check assay, the impurities listed and their limits. The product compare feature on Zemixal shows grade data together, which makes differences easy to spot.

Can extra pure be used for preparing buffers?

For most routine buffers, yes. For buffers used in validated assays or regulated testing, many laboratories prefer AR grade so the impurity profile is fully specified.

Chemical grade

Extra Pure Grade chemicals

A middle grade with higher assay and more impurity tests than LR, below a full AR specification, widely used for synthesis.

640 products in this grade

Extra Pure Grade products

385–408 of 640 products

Hexamine, 99%

CAS: 100-97-0
Formula: C₆H₁₂N₄
MW: 140.19 g/mol

ZX-011571

Homovanillic acid, 98%

CAS: 306-08-1
Formula: C₉H₁₀O₄
MW: 182.17 g/mol

ZX-007562

Hydrazine dihydrochloride, 99%

CAS: 5341-61-7
Formula: Cl₂H₆N₂
MW: 104.96 g/mol

ZX-015064

Hydrazine Sulphate Purified Volumetric Solution

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

ZX-038084

Hydrochloric acid, 2.0 M in diethyl ether, extra pure 35%

CAS: 7647-01-0
Formula: ClH
MW: 36.46 g/mol

ZX-037009

Hydroiodic acid ~57% aq. solution, extra pure 57%

CAS: 10034-85-2
Formula: HI
MW: 127.91 g/mol

ZX-037282

Hydroxypropyl-beta-cyclodextrin, extra pure

CAS: 94035-02-6
Formula: C₅₄H₁₀₂O₃₉
MW: 1375.4 g/mol

ZX-019189

Indium oxide, 99%

CAS: 1312-43-2
Formula: In₂O₃
MW: 277.63 g/mol

ZX-014312

Indium(III) chloride, 99%

CAS: 10025-82-8
Formula: Cl₃In
MW: 221.17 g/mol

ZX-014326

Iodic acid, extra pure

CAS: 7782-68-5
Formula: HIO₃
MW: 175.91 g/mol

ZX-037284

Iodine, 99%

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

ZX-000870

Iodoacetic acid, extra pure >98%

CAS: 64-69-7
Formula: C₂H₃IO₂
MW: 185.95 g/mol

ZX-037285

Iodoform, 99%

CAS: 75-47-8
Formula: CHI₃
MW: 393.73 g/mol

ZX-009528

Iodopentane, extra pure

CAS: 628-17-1
Formula: C₅H₁₁I
MW: 198.05 g/mol

ZX-018948

iso-Butylamine, extra pure >99%

CAS: 78-81-9
Formula: C₄H₁₁N
MW: 73.14 g/mol

ZX-019110

Isoctane, 99%

CAS: 540-84-1
Formula: C₈H₁₈
MW: 114.23 g/mol

ZX-001915

Isopentyl bromide, extra pure >98%

CAS: 107-82-4
Formula: C₅H₁₁Br
MW: 151.04 g/mol

ZX-019111

Isopropenyl acetate, extra pure >99%

CAS: 108-22-5
Formula: C₅H₈O₂
MW: 100.12 g/mol

ZX-019112

Isopropyl chloroformate solution 1.0 M in toluene, extra pure

CAS: 108-23-6
Formula: C₄H₇ClO₂
MW: 122.55 g/mol

ZX-019113

Isopropyl isocyanate, extra pure >98%

CAS: 1795-48-8
Formula: C₄H₇NO
MW: 85.1 g/mol

ZX-019114

Isopropylmagnesium chloride lithium chloride complex 1.3 M in THF, extra pure

CAS: 745038-86-2
Formula: C₃H₇Cl₂LiMg
MW: 145.3 g/mol

ZX-018943

Keiselguhr, purified

CAS: 91053-39-3

ZX-010544

L-Ascorbic acid, 99%

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

ZX-007900

L-Lysine, base, 99%

CAS: 56-87-1
Formula: C₆H₁₄N₂O₂
MW: 146.19 g/mol

ZX-002141

Compare with other grades

HPLC Grade GC Grade AR Grade (Analytical Reagent)ACS Grade LR Grade (Laboratory Reagent)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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