Can I use HPLC grade hexane for GC?

Sometimes, but HPLC grade is tested for UV absorbance rather than GC peaks. Trace volatile impurities that are invisible to a UV detector can show up on an FID or ECD, so a GC or residue grade is the safer choice for trace work.

Why is DMSO used for headspace residual solvent testing?

DMSO has a high boiling point, dissolves most drug substances and elutes well after common residual solvents. A headspace grade is tested to show that it contributes no measurable peaks for the solvents listed in ICH Q3C.

What does a lindane equivalent mean on a COA?

Pesticide residue grade solvents report ECD-active impurities as if they were lindane, after concentrating the solvent. It gives a single figure for electron-capturing contaminants that would interfere with organochlorine residue methods.

Chemical grade

GC Grade chemicals

Solvents for gas chromatography with high GC purity, low non-volatile residue and few peaks that interfere with FID, ECD or MS.

150 products in this grade

GC Grade products

145–150 of 150 products

Trimethylchloro silane,1.0 M in THF, for GC >98%

CAS: 75-77-4
Formula: C₃H₉ClSi
MW: 108.64 g/mol

ZX-037432

Trioctylamine, for GC 95%

CAS: 1116-76-3
Formula: C₂₄H₅₁N
MW: 353.7 g/mol

ZX-037417

Triphenyl phosphate, for GC >98%

CAS: 115-86-6
Formula: C₁₈H₁₅O₄P
MW: 326.3 g/mol

ZX-037418

Tripropylamine, for GC >98%

CAS: 102-69-2
Formula: C₉H₂₁N
MW: 143.27 g/mol

ZX-037419

Veratrole, for GC >98%

CAS: 91-16-7
Formula: C₈H₁₀O₂
MW: 138.16 g/mol

ZX-037421

Water, for GC

CAS: 7732-18-5
Formula: H₂O
MW: 18.02 g/mol

ZX-037250

Compare with other grades

HPLC Grade AR Grade (Analytical Reagent)ACS Grade 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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