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SEMITI SL70

70% TiO2 Slurry

Pre-dispersed 70% solids slurry — drop-in for waterborne paints and paper coating, eliminates dust + dispersion step.

International equivalents: Tronox SL-70 · Chemours Ti-Pure Slurry

SEMITI SL70 is a pre-dispersed 70% solids titanium dioxide slurry, supplied in 1000 kg IBC or 200 kg drum. The product is engineered as a drop-in replacement for powder TiO2 in waterborne paint and paper coating production, eliminating two costly steps: (1) powder dust handling and PPE in the pigment grind area, and (2) the entire mill-time of pigment dispersion.

For paint manufacturers running high-volume waterborne emulsion paint, SEMITI SL70 dramatically simplifies the production process. The slurry pumps directly into the letdown tank, replacing the pigment-grind step entirely. Plant throughput typically increases 30–50% on the same equipment footprint, with associated reductions in mill maintenance, dispersion energy, and OSHA-compliance burden for TiO2 dust.

For paper mill coating operations, SEMITI SL70 integrates directly with the coating prep tank, providing tight TiO2 distribution control without batch-to-batch dispersion variation.

Why customers pick SEMITI SL70

  • 01Eliminates pigment grind step — 30–50% paint plant throughput gain
  • 02Zero TiO2 dust exposure — major occupational health and PPE benefit
  • 03Tight viscosity spec for direct pumping into letdown
  • 04Consistent particle dispersion — no batch-to-batch variation from grinding
  • 05Stable to 12 months storage with simple agitation prior to use

Typical specifications

Batch-specific CoA accompanies every shipment.

TiO2 solids content70% ± 0.5%
CarrierWater, < 0.5% dispersant
Viscosity (Brookfield 25°C)1000–2500 cP
pH8.5–9.5
Density1.95–2.05 g/mL
Underlying TiO2Chloride rutile, alumina surface (~SEMITI 902)
Storage stability12 months in sealed IBC; mild agitation before use

Typical dosage

Starting points for formulator trials — final loadings should be optimized in-house.

Waterborne emulsion paint
20–35% on total formula
Direct letdown — no grind step. Multiply powder TiO2 spec by 1.43 for slurry equivalent.
Paper coating slip
TiO2 25–40% on dry coating weight

vs international reference grades

Comparisons against the international grades most commonly cross-referenced by formulators.

Tronox
SL-70

Direct functional equivalent. SEMITI SL70 has the same 70% solids, same Brookfield viscosity range, same drop-in compatibility for paint and paper coating.

Self — SEMITI 902 powder

Same underlying TiO2. SEMITI SL70 trades powder cost-per-kg for plant throughput + dust elimination. Pays back for plants > 5000 t/year paint volume.

Primary applications

Architectural Coatings
Interior emulsion + exterior facade paints — the largest single TiO2 application by volume.
Paper Laminate & Decor Paper
Decor paper for furniture and flooring laminates — high opacity at 30–40% loading, retention-aid compatible.

Packaging & shipping

1000 kg IBC tote (preferred — pumps direct to plant feed); 200 kg drum. Ocean shipment in 20' container = 18 t TiO2 equivalent. Provide pump-compatible delivery system on first order.

Common questions

What's my payback for switching from powder to SEMITI SL70?+
Two main savings streams: (1) labor and PPE in the pigment grind area, typically $20–40k/year per shift, (2) plant throughput gain, typically 30–50% — a paint plant doing 10,000 t/year can either ship 13,000 t with the same crew, or ship 10,000 t with a smaller crew. Net payback period for slurry premium typically 6–12 months on volumes > 5000 t/year.
Can SEMITI SL70 be used in solventborne paint?+
No. The slurry is water-based. For solventborne applications, use SEMITI 902 or 706 powder grades.
Does the slurry settle in storage?+
Mild sedimentation over 6+ months is normal. Mechanical agitation in the IBC for 5–10 min before pumping fully redisperses. Hard packing does not occur within the 12-month shelf life with proper storage (no freezing, ambient temperature).

Request CoA, sample, or quote for SEMITI SL70

We typically respond within 24 hours UTC+8. Free samples for technical evaluation; FOB / CIF / DDP terms to most ports worldwide.

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