What is the primary application of this paint?

It is used as a foundational anti-corrosive primer coat on bare structural steel and ferrous metals before applying subsequent protective or decorative topcoats.

Can IS 110 primer be applied using a spray gun?

While the standard specifically evaluates the paint for brushing consistency, it can often be sprayed if suitably thinned, though this alters the specified brushing parameters.

Which standard provides the testing methodology for this paint?

The IS 101 series (Methods of sampling and test for paints, varnishes and related products) is cross-referenced for all laboratory tests.

IS 110

: 2017

Ready Mixed Paint, Brushing, Red Oxide, Priming, For Ferrous Metals - Specification

CurrentFrequently UsedSpecificationMaterials Science · Painting, Coatings and Surface Finishing

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This standard specifies the requirements and testing methods for ready mixed brushing red oxide primer used for protecting ferrous metals against corrosion. It serves as a primary reference for engineers applying base coats on structural steel, ironwork, and fabricated metal components prior to applying finishing paints.

Specifies requirements and methods of test for ready mixed, brushing, red oxide priming paint for ferrous metals.

Quick Reference Values

Surface drying timeMax 4 hours

Hard drying timeMax 18 hours

Flash pointNot below 30°C

Water contentMax 5 percent by mass

FinishSmooth and matt to egg-shell flat

Practical Notes

Surface preparation is critical; ferrous surfaces must be completely clean of rust, mill scale, and grease (typically via wire brushing or sandblasting) before applying the primer.

Ensure the primer is properly stirred before application, as the heavy red oxide pigment tends to settle at the bottom of the container.

Always verify compatibility with the intended synthetic enamel or topcoat to prevent issues like bleeding or blistering.