IS 5149:2020 pertains to technical grade maleic anhydride. This standard outlines the specifications, sampling protocols, and testing methods for maleic anhydride intended for industrial applications.

The substance may exist in solid or molten form. In its solid state, it should manifest as white flakes, rods, pellets, or briquettes devoid of visible impurities. Maleic anhydride possesses toxicity, and hazardous decomposition may occur upon exposure to caustic substances, alkalis, alkaline compounds, or organic bases. Therefore, utmost caution must be exercised during handling, usage, and storage. Special attention should be paid to prevent skin contact, inhalation of dust and vapor, and when handling equipment contaminated with maleic anhydride. Upon testing according to the methods outlined in Annex A of the standard, the substance must meet the specified requirements.

TESTS

The subsequent test must be conducted for Maleic Anhydrides.

• Description

• Crystallization point

• Colour of the Molten Material

• Maleic Acid Content

• Maleic Anhydride content

• Ash content

• Iron Content

The material should be securely packed in airtight containers such as bottles, steel barrels, or tank cars. As per IS 5149 guidelines, each package must be clearly and permanently labeled with relevant information. The Standard Mark (ISI Mark) should be affixed to each package, provided that the material meets all specified requirements. Manufacturers are required to acquire a BIS license from the Bureau of Indian Standards to use the standard mark (ISI Mark), which is granted following a thorough evaluation of manufacturing infrastructure, quality control and testing capabilities, and production processes.

PROCESS FOR BIS ISI MARK CERTIFICATION