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(Sodium pyrophosphate extraction - potassium dichromate oxidation colorimetric method, this method is for reference only) one. Reagent configuration: 1: concentrated sulfuric acid: (analytical purity 98%). 2: 0.8mol/L 1/6 potassium dichromate...
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Shanghai Hengdailao Trading Co., Ltd. is mainly engaged in the research and development and sales of laboratory equipment, immunology, molecular biology and conventional biochemical reagents. And agent sales of many well-known foreign brands, is...
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English name: 2-Naphthylamine-1-sulfonic acid; 2-Amino-1-naphthalenesulfonic acid; Tobias acid Other names: Tobias acid; 2-aminonaphthalene-1-sulfonic acid; 2-amino-1-naphthalenesulfonic acid; debias acid; tonic acid CAS number: 81-16-3 C10H9NO3S =...
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1. Why is phosphoric acid used as a curing agent for high-nitrogen furan self-hardening resins, and rarely as a curing agent for low-nitrogen furan self-hardening resins? This is because the low-nitrogen sterol resin, when using an acid as a curing...