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

169–192 of 640 products

5-Hexene-2-one, extra pure >97%

CAS: 109-49-9
Formula: C₆H₁₀O
MW: 98.14 g/mol

ZX-019079

5-Sulphosalicylic acid, 99%

CAS: 5965-83-3
Formula: C₇H₁₀O₈S
MW: 254.22 g/mol

ZX-009861

5,5'-Dithiobis-(2-nitrobenzoic acid), 99%

CAS: 69-78-3
Formula: C₁₄H₈N₂O₈S₂
MW: 396.4 g/mol

ZX-007428

6-Chloronicotinylchloride, extra pure >97%

CAS: 66608-11-5
Formula: C₆H₄Cl₃NO
MW: 212.5 g/mol

ZX-019215

6-Phenylimidazo[2,1-b]thiazole-5-carboxylic acid, extra pure

CAS: 77628-52-5
Formula: C₁₂H₈N₂O₂S
MW: 244.27 g/mol

ZX-019174

7,7-Dichlorobicyclo[4.1.0]heptane, extra pure >98%

CAS: 823-69-8
Formula: C₇H₁₀Cl₂
MW: 165.06 g/mol

ZX-019205

Acenaphthenequinone, extra pure 97%

CAS: 82-86-0
Formula: C₁₂H₆O₂
MW: 182.17 g/mol

ZX-019178

Acetylacetone peroxide (~4.0% active oxygen), extra pure

CAS: 37187-22-7
Formula: C₁₀H₁₄O₆
MW: 230.21 g/mol

ZX-018954

Adipamide, extra pure >98%

CAS: 628-94-4
Formula: C₆H₁₂N₂O₂
MW: 144.17 g/mol

ZX-018955

Allyl chloroformate, extra pure >98%

CAS: 2937-50-0
Formula: C₄H₅ClO₂
MW: 120.53 g/mol

ZX-018956

Allyl methacrylate, extra pure >98%

CAS: 96-05-9
Formula: C₇H₁₀O₂
MW: 126.15 g/mol

ZX-018957

Allyltrimethylsilane, extra pure >98%

CAS: 762-72-1
Formula: C₆H₁₄Si
MW: 114.26 g/mol

ZX-019258

alpha-Acetamidocinnamic acid, extra pure >98%

CAS: 5469-45-4
Formula: C₁₁H₁₁NO₃
MW: 205.21 g/mol

ZX-018953

Aluminium ammonium sulphate, 99%

CAS: 7784-26-1
Formula: AlH₂₈NO₂₀S₂
MW: 453.3 g/mol

ZX-014148

Aluminium fluoride, 97%

CAS: 15098-87-0
Formula: AlF₃H₆O₃
MW: 138.02 g/mol

ZX-014165

Aluminium potassium sulphate, 99%

CAS: 7784-24-9
Formula: AlH₂₄KO₂₀S₂
MW: 474.4 g/mol

ZX-014180

Aluminium Sulphate Purified Hexadecahydrate, 98%

CAS: 16828-11-8
Formula: Al₂H₂₂O₂₀S₃
MW: 492.3 g/mol

ZX-019265

Aluminium-tri-tert-butylate, extra pure

CAS: 556-91-2
Formula: C₁₂H₂₇AlO₃
MW: 246.32 g/mol

ZX-019179

Amido black 10B, extra pure 80%

CAS: 1064-48-8
Formula: C₂₂H₁₄N₆Na₂O₉S₂
MW: 616.5 g/mol

ZX-037261

Ammonia solution 30%

CAS: 1336-21-6
Formula: H₅NO
MW: 35.05 g/mol

ZX-001972

Ammonia solution, 25%

CAS: 1336-21-6
Formula: H₅NO
MW: 35.05 g/mol

ZX-001973

Ammonium acetate, 96%

CAS: 631-61-8
Formula: C₂H₇NO₂
MW: 77.08 g/mol

ZX-015016

Ammonium adipate, 98%

CAS: 3385-41-9
Formula: C₆H₁₆N₂O₄
MW: 180.2 g/mol

ZX-015018

Ammonium benzoate, 98%

CAS: 1863-63-4
Formula: C₇H₉NO₂
MW: 139.15 g/mol

ZX-015021

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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