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Salicylic Acid ACS >99% 500g
Item #:
SIG/247588-500G
Supplier #: 247588-500G
Supplier #: 247588-500G
SIGMA-ALDRICH CORPORATION Part No. 247588-500G
ACS reagent, ≥99.0% Synonym(s): 2-Hydroxybenzoic acid Empirical Formula: C7H6O3 Formula Weight: 138.12 Linear Formula: 2 - (HO)C6H4CO2H MDL Number: MFCD00002439 Purity: ≥99.0% Boiling Point: 211 °C(lit.) Melting Point: 158-161 °C(lit.) Beilstein Registry Number: 774890 RTECS No.: VO0525000
ACS reagent, ≥99.0% Synonym(s): 2-Hydroxybenzoic acid Empirical Formula: C7H6O3 Formula Weight: 138.12 Linear Formula: 2 - (HO)C6H4CO2H MDL Number: MFCD00002439 Purity: ≥99.0% Boiling Point: 211 °C(lit.) Melting Point: 158-161 °C(lit.) Beilstein Registry Number: 774890 RTECS No.: VO0525000
Ammonium Persulfate, ACS 98+% 500G
Item #:
SIG/248614-500G
Supplier #: 248614-500G
Supplier #: 248614-500G
SIGMA-ALDRICH CORPORATION Part No. 248614-500G
ACS reagent, ≥98.0% Synonym(s): AP; APS; Ammonium peroxodisulfate; Ammonium peroxydisulfate; PER Empirical Formula: H8N2O8S2 Formula Weight: 228.20 Linear Formula: (NH4)2S2O8 MDL Number: MFCD00003390 Purity: ≥98.0% RTECS No.: SE0350000 RIDADR: UN 1444 5.1 / PGIII
ACS reagent, ≥98.0% Synonym(s): AP; APS; Ammonium peroxodisulfate; Ammonium peroxydisulfate; PER Empirical Formula: H8N2O8S2 Formula Weight: 228.20 Linear Formula: (NH4)2S2O8 MDL Number: MFCD00003390 Purity: ≥98.0% RTECS No.: SE0350000 RIDADR: UN 1444 5.1 / PGIII
Purge/Trap G
Item #:
SIG/24936
Supplier #: 24936
Supplier #: 24936
General description
Tubes used in purge and trap analyses generally are packed with multiple beds of adsorbent materials, so that a broad range of polar and nonpolar, high and low molecular weight compounds can be trapped in a single tube. Each bed protects the next, increasingly active bed, by preventing compounds from being held so strongly that they cannot be desorbed quickly without decomposition. During the purge phase of sampling, lower molecular weight compounds pass through the initial adsorbent beds, but are trapped by succeeding beds. During desorption, the carrier gas passes through the trap in the reverse direction of purge flow, so that higher molecular weight compounds never come in contact with the stronger (innermost) adsorbents.
Dichloromethane, Chromasolv,HPLC, =99.8%
Item #:
SIG/34856-4X4L
Supplier #: 34856-4X4L
Supplier #: 34856-4X4L
SIGMA-ALDRICH CORPORATION Part No. 34856-4X4L
Chemical name: Dichloromethane Chemical synonyms: Methylene chloride Material form: Solvent Density (g/cm3): 1.32 - 1.33 Molecular weight: 84.93 Molecular formula: CH2Cl2 Chemical purity: =99.8% UN Number: UN 1593
Chemical name: Dichloromethane Chemical synonyms: Methylene chloride Material form: Solvent Density (g/cm3): 1.32 - 1.33 Molecular weight: 84.93 Molecular formula: CH2Cl2 Chemical purity: =99.8% UN Number: UN 1593
Phosphoric Acid ACS =85 wt.% In H2O
Item #:
SIG/695017-2.5L
Supplier #: 695017-2.5L
Supplier #: 695017-2.5L
SIGMA-ALDRICH CORPORATION Part No. 695017-2.5L
Chemical name: ortho-Phosphoric acid Chemical synonyms: Orthophosphoric acid Material form: Liquid Density (g/cm3): 1.71 Molecular weight: 98 Molecular formula: H3O4P Chemical purity: =99.5% UN Number: UN 1805
Chemical name: ortho-Phosphoric acid Chemical synonyms: Orthophosphoric acid Material form: Liquid Density (g/cm3): 1.71 Molecular weight: 98 Molecular formula: H3O4P Chemical purity: =99.5% UN Number: UN 1805
Hydrofluoric Acid ACS 48% 500mL
Item #:
SIG/695068-500ML
Supplier #: 695068-500ML
Supplier #: 695068-500ML
SIGMA-ALDRICH CORPORATION Part No. 695068-500ML
Chemical synonyms: HF Density (g/cm3): 1.15 Molecular weight: 20.01 Molecular formula: HF Chemical purity: 0.48 UN Number: UN1790
Chemical synonyms: HF Density (g/cm3): 1.15 Molecular weight: 20.01 Molecular formula: HF Chemical purity: 0.48 UN Number: UN1790
