{"id":8436,"date":"2026-03-03T11:32:35","date_gmt":"2026-03-03T03:32:35","guid":{"rendered":"https:\/\/www.honorpigment.com\/en\/pigment-red-112-waterborne-coatings-ultimate-guide\/"},"modified":"2026-03-03T11:32:35","modified_gmt":"2026-03-03T03:32:35","slug":"pigment-red-112-waterborne-coatings-ultimate-guide","status":"publish","type":"post","link":"https:\/\/www.honorpigment.com\/sq\/pigment-red-112-waterborne-coatings-ultimate-guide\/","title":{"rendered":"Pigment Red 112 for Waterborne Coatings: The Practical Guide"},"content":{"rendered":"
\"Macro<\/figure>\n\n\n\n

If you\u2019re formulating modern waterborne paints, Pigment Red 112 for waterborne coatings is a dependable route to a bright, medium-to-yellowish red with solid cost-to-performance. This guide distills what matters to get repeatable color, fast and stable dispersion in low-VOC, APEO-free systems, and durability that holds up in real jobs\u2014across architectural walls and industrial metal.<\/p>\n\n\n\n

Where Pigment Red 112 for Waterborne Coatings Fits<\/h2>\n\n\n\n

Pigment Red 112 (C.I. PR112) is a monoazo, naphthol-AS red known for vivid chroma and a slightly yellowish undertone that tints cleanly. It\u2019s common in architectural latex and select industrial finishes where you need reliable color without moving to higher-cost quinacridones.<\/p>\n\n\n\n

For chemical resistance context on a 1\u20135 scale, Vichem\u2019s Quindo Red P.R.112 page lists typical resistances used by coatings formulators when screening grades: fastness and resistance table for P.R.112<\/a>.<\/p>\n\n\n\n

Key Properties and What They Mean in Paint<\/h2>\n\n\n\n

Different PR112 grades show different numbers, but certain ranges crop up across reputable sources. Density affects settling behavior; oil absorption points to the amount of resin needed to wet the surface; pH gives a feel for suspension behavior; and fastness values hint at exterior fitness. Avoid treating any single figure as universal\u2014always confirm your grade\u2019s TDS.<\/p>\n\n\n\n

Typical ranges and their formulation implications referenced from commonly published supplier TDS summaries include density around 1.4\u20131.55 g\/cm\u00b3, oil absorption around 40\u201350 g\/100 g, aqueous pH near neutral, and heat stability that can reach 200 \u00b0C for limited bake exposure. Always verify your specific grade\u2019s TDS.<\/p>\n\n\n\n

\n\n<\/colgroup>

Property<\/p><\/th>

Typical range<\/p><\/th>

Why it matters in waterborne paint<\/p><\/th>

Source context<\/p><\/th><\/tr>

Density<\/p><\/td>

1.42\u20131.55 g\/cm\u00b3<\/p><\/td>

Heavier pigments settle faster; balance low-shear rheology and anti-settling<\/p><\/td>

Typical supplier TDS summaries<\/p><\/td><\/tr>

Oil absorption<\/p><\/td>

40\u201350 g\/100 g<\/p><\/td>

Higher values mean more binder\/dispersant demand and potential viscosity rise<\/p><\/td>

Typical supplier TDS summaries<\/p><\/td><\/tr>

Aqueous pH (slurry)<\/p><\/td>

~6\u20138<\/p><\/td>

Near-neutral surface; responds well to mild alkalinity during grind<\/p><\/td>

Typical supplier TDS summaries<\/p><\/td><\/tr>

Heat stability<\/p><\/td>

140\u2013200 \u00b0C (short exposure)<\/p><\/td>

Adequate for many waterborne enamels; confirm with your bake profile<\/p><\/td>

Typical supplier TDS summaries<\/p><\/td><\/tr>

Lightfastness<\/p><\/td>

5\u20137 scale (grade- and shade-dependent)<\/p><\/td>

Better in masstone than in pale tints; key for exterior work<\/p><\/td>

Typical supplier TDS summaries<\/p><\/td><\/tr>

Chemical resistance<\/p><\/td>

Acid\/alkali\/alcohol often 4\u20135; oil ~3<\/p><\/td>

Helps predict cleaning resistance and maintenance cycles<\/p><\/td>

Vichem resistance table<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n

Note on methods and scales: \u201cLightfastness\u201d can refer to Blue Wool 1\u20138 or other scales; verify the scale in your source and bind your own testing to a standard exposure such as ASTM D4587 fluorescent UV cycles or ISO 16474-3. For fineness and end-of-grind checks, ASTM D1210 is the go-to Hegman method, and for color tolerance, ASTM D2244 provides \u0394E and \u0394E00 computation guidance. See the current ASTM listings for D1210 fineness of dispersion<\/a> and D2244 color differences and tolerances<\/a>. For accelerated weathering practice, reference ASTM D4587 fluorescent UV exposure<\/a>.<\/p>\n\n\n\n

How Pigment Red 112 for Waterborne Coatings Behaves<\/h2>\n\n\n\n

PR112 is hydrophobic with moderate oil absorption, so it benefits from strong polymeric dispersants that provide both electrostatic and steric stabilization in acrylic and styrene-acrylic systems. Under APEO-free and low-VOC constraints, common choices include polycarboxylate and advanced nonionic or polyurethane dispersants. You\u2019ll often achieve faster color development and lower millbase viscosity when the dispersant anchors well to the pigment surface and extends a solvated chain into the continuous phase.<\/p>\n\n\n\n

For context on aqueous dispersants and their fit in waterborne paints, consult a representative reference from additive suppliers that outlines chemistry and usage context: polymeric dispersants designed for aqueous systems<\/a>.<\/p>\n\n\n\n

Building a Stable Millbase and a Smooth Letdown<\/h2>\n\n\n\n

Aim to make a fast, stable grind that reaches color strength without over-shearing the system into re-agglomeration. Think of the millbase as the pigment\u2019s \u201chome\u201d and the letdown as the \u201cneighborhood\u201d it must live in peacefully.<\/p>\n\n\n\n

Millbase targets to anchor your lab work:<\/p>\n\n\n\n