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Megh Rasayan is one of The Best PNTOSA Manufacturer, Exporter & Supplier India . Its chemical name is 4-Nitrotoluene-2-sulfonic acid. The CAS Number of Para Nitro Toluene Ortho Sulphonic Acid (PNT-OSA) is 121-03-09. It is a crystal with a gray or brown colour, and its empirical formula is C 7 H7NO5S. PNTOSA is acid used for intermediating dye stuff and the most common commercial name for this product is PNTOSA. If you use Para Nitro Toluene Ortho Sulphonic Acid, you should always keep it away from fire or high temperature because it is easily incendiary.
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