OPAL PP Opalene MH25N

OPAL PP Opalene MH25N is a polypropylene homopolymer injection moulding grade manufactured by ONGC Petro additions Limited (OPaL) under the OPaLene PP range. Produced using Ineos gas phase polymerization technology, this natural coloured grade is designed for processors who need high flow, clarity-focused performance, excellent stiffness, and reliable dimensional stability in moulded parts.

MH25N is positioned as a clarified PP homopolymer with slip agent, making it especially relevant for applications where easy processing, improved part appearance, and efficient mould release matter. It is widely suited for consumer products, medical syringes, and transparent containers or jars where stiffness, clean moulding behavior, and visual quality are important selection factors.

Manufacturer Snapshot

ONGC Petro additions Limited (OPaL) is one of India’s leading petrochemical manufacturers with a broad polypropylene portfolio serving injection moulding, film, raffia, and specialty plastics applications. OPaLene PP grades are recognized in the Indian market for application-specific design, dependable polymer quality, and compliance-backed documentation for regulated and industrial end uses.

Technical Insights and Data Sheet Highlights

OPAL PP Opalene MH25N has a melt flow index of 25 g/10 min, which places it in the high flow category for polypropylene homopolymer injection moulding grades. This higher flow supports easy cavity filling, smoother processing of thin-wall parts, and better productivity in moulds that require fast, repeatable cycles.

The grade has a density of 0.90 g/cm³, consistent with rigid lightweight polypropylene applications. In mechanical terms, MH25N offers 40 MPa tensile strength at yield, showing strong rigidity for moulded components that need shape retention and structural stability. Its 10% elongation at break reflects a stiffness-oriented profile suitable for precision moulded parts rather than flexible impact-led applications.

A major strength of MH25N is its flexural modulus of 1800 MPa, which is notably high and makes the grade attractive for rigid transparent packaging, medical mouldings, and consumer articles requiring excellent stiffness. Its notched Izod impact strength of 11 J/m at 23°C supports normal handling performance, while Rockwell hardness of R100 reinforces the grade’s hard, rigid surface character.

Thermally, MH25N delivers a Vicat softening point of 150°C and a heat deflection temperature of 125°C, which is a strong advantage for applications exposed to elevated temperatures during filling, storage, or use. The clarified formulation improves transparency, while the slip agent supports mould release, part handling, and smoother downstream processing.

Injection Moulding Performance

MH25N is engineered for processors who need a high flow PP homopolymer that can run efficiently in injection moulding machines while maintaining stiffness and part definition. Its flow profile makes it suitable for thin-wall and complex moulded articles where easier filling and shorter cycle potential are important.

The clarified nature of the grade supports improved visual clarity in finished parts, making it useful for transparent jars, containers, and medical components. The presence of slip agent adds practical processing value by helping part release and improving handling behavior in production environments.

Applications

Medical Syringes

OPAL PP Opalene MH25N is highly relevant for medical syringe applications where moulders need a polypropylene homopolymer grade with clarity, stiffness, and dimensional consistency. Its high flow helps in precision mould filling for syringe components, while the clarified formulation supports a cleaner visual appearance expected in medical and healthcare-related plastic parts.

Transparent Containers and Jars

For transparent containers, jars, and rigid packaging items, MH25N offers a useful balance of clarity, stiffness, and thermal resistance. The grade is suitable for moulded packaging formats where appearance matters along with structural feel, making it a strong option for transparent PP jars, storage containers, and application-specific packaging components.

Consumer Products

MH25N is also well suited for consumer product moulding where high flow processing and rigid part performance are required. It can be used in utility products, personal care packaging, household mouldings, and other injection moulded items where dimensional stability, surface quality, and efficient processing are key purchase criteria.

Compliance and Handling

This grade is aligned with IS 10910, IS 10909 positive list, and FDA CFR Title 21, 177.1520 requirements for olefin polymers. For best material performance, MH25N should be stored in a dry, dust-free environment below 50°C and protected from direct sunlight and heat.

Comparable Alternatives

Within the OPaL portfolio, OPAL PP Opalene MH23 is a nearby alternative for processors seeking a high flow injection moulding grade, but MH25N is better positioned where clarified appearance and slip-assisted processing are required. That makes MH25N more suitable for transparent packaging and visually sensitive moulded products.

Compared with OPAL PP Opalene MH13, MH25N offers significantly higher flow and stronger suitability for thin-wall, clarity-oriented, and syringe-related applications. MH13 is more aligned with stiffness-led general injection moulding, while MH25N is assigned to applications where faster flow, transparency, and cleaner moulding behavior matter more.

Against Indian alternatives such as Reliance Repol H210MA, MH25N remains a competitive choice for processors looking for a high flow clarified PP homopolymer with strong stiffness and regulated-use documentation. The rationale behind MH25N is clear: it is designed for injection moulding applications that need clarity, rigidity, and efficient processing in one grade.