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Stains and dyesDye

CLT50

CLT50 Kromolux dye concentrate, Donato

Kromolux (made by MILESI) concentrated transparent dye stain, ready-mixed shade «Donato». Very even colour and high strength, so you can go dark and still keep the wood clear. Cut with water or solvent, with or without a binder. Every dye in the range mixes with the others in any ratio.

  • Colouring all kinds of wood, veneer or solid
  • The ready «Donato» shade, grain still visible
  • A base for mixing your own shades with other Kromolux dyes

Mix calculator

g
Thinner750.0 %

When: Listed as an approved thinner on the official pages of Kromolux dyes CLT1–CLT10 (CLT11/12/18 pages list no thinner).

Additive

Ratio 100 : 750.0

ComponentWeigh out
CLT50part A58.8 g
LZC97Thinner441 g
Total500 g

Covers roughly 5.56 m² at 90 g/m².

Ask about CLT50

Answers are based on the CLT50 data and the products it mixes with.

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Mixing matrix

  • S10Thinner
    % by weight: 500–1000 %dealer% by volume: 500–1000 %dealer

    Fast, strong solvency: stains on fine-pored timber (beech, birch, maple, alder, cherry).

    500–1000 % means 5 to 10 parts thinner to 1 part concentrate. More thinner = lighter, more transparent shade.

  • S12Thinner
    % by weight: 500–1000 %dealer% by volume: 500–1000 %dealer

    Medium evaporation: stains on medium-pored timber.

    500–1000 % means 5 to 10 parts thinner to 1 part concentrate. More thinner = lighter, more transparent shade.

  • S90Thinner
    % by weight: 500–1000 %dealer% by volume: 500–1000 %dealer

    Slow evaporation: stains on open-pored timber (oak, ash, walnut). The slow flash also helps on big panels and in hot weather (fewer stripes).

    500–1000 % means 5 to 10 parts thinner to 1 part concentrate. More thinner = lighter, more transparent shade.

  • LZC97Thinner
    % by weight: 500–1000 %official% by volume: 500–1000 %official

    Listed as an approved thinner on the official pages of Kromolux dyes CLT1–CLT10 (CLT11/12/18 pages list no thinner).

    The CLT50 dealer page doesn't list LZC97. The data comes from sibling pages in the same series (same chemistry). LZC97's own properties are unpublished.

  • WATERThinner
    % by weight: 500–1000 %dealer% by volume: 500–1000 %dealer

    Water dilution, when you want a solvent-free stain. Deionised water only.

    Dealer note: use only deionised water, or the dye can flocculate and lose colour stability in the can. Water raises the grain, so wet, dry and sand the wood before staining (official wood-prep page).

  • LZC97 / LZC1000Thinner
    % by weight: 1 part CLT : 0.5 part LZC97 : 9.5 parts LZC1000 (≈ LZC97 50 % + LZC1000 950 %)datasheet

    Milesi's own solvent recipe for the Kromolux series. Technocolor doesn't sell LZC1000; use S10/S12/S90 in its place.

    Milesi CLT Kromolux SERIES TDS (rev. I, Oct 2006); CLT50 is not named in it, value applies to the series

  • LZC97 / WATERThinner
    % by weight: 1 part CLT : 1 part LZC97 : 14 parts water (≈ LZC97 100 % + water 1400 %)datasheet

    Milesi's water recipe: LZC97 acts as a co-solvent for wetting and stability. Deionised water only.

    Milesi CLT Kromolux SERIES TDS (rev. I, Oct 2006); CLT50 is not named in it, value applies to the series

  • LZC1000 / LZC1024 / LZC97 / LTC5 / WATERThinner
    % by weight: 500–800 %datasheet

    Milesi TDS: hand spray and automatic airmix/airless/swing-arm guns 500–800 %; rotating carousel 700–1500 %.

    Milesi CLT Kromolux SERIES TDS (rev. I, Oct 2006); CLT50 is not named in it, value applies to the series

  • CFH1Additive
    % by weight: 0–200 %dealer% by volume: 0–200 %dealer

    Spray binder for the solvent-borne system: use it when the concentrate is cut with S10/S12/S90.

    0 % = straight dye, no binder. The binder locks the dye in, cuts bleed into the next sealer coat and evens out absorption. The solvent/water pairing comes from the dealer table (CFH1 / CFS1 = 'solvent-borne / water-borne spray binder').

  • CFS1Additive
    % by weight: 0–200 %dealer% by volume: 0–200 %dealer

    Spray binder for the water-borne system: use it when the concentrate is cut with deionised water.

    Solvent/water pairing per the dealer table. The official CLT10 page lists CFS1 only.

Percentages are per 100 parts of component A.

Characteristics

Viscosity
24 ± 2 s (dealer gives no cup; the identical 24" ± 2" in the Milesi series TDS is on the ISO 3 mm cup, NOT DIN4)dealer
Drying · Touch-dry
10–30recommended
Drying · Overcoat (min)
30–120recommended
Drying · Conditions
Derived values assume ~20 °C, 50–70 % RH; series TDS figures are at 20 °C / 70 % RH
Lightfastness
Transparent dye: bright, saturated colour, but less lightfast than the pigment stains (catalog: pigment stains are the high-lightfastness option).catalog
Density
0.945–0.965 g/cm³ (specific gravity, 20 °C)datasheet
Colour strength
Higher concentration than ordinary stains, so dark shades stay transparentdealer

Colours

  • CLT50 · Donato

Application

HVLP

Nozzle
1–1.3 (typ. 1.2) mmrecommended
Pressure · air
1.5–2 barrecommended
Spray viscosity
10–12 s DIN4recommended
Consumption
80–100 g/m²dealer
Wet film
95–125 µmrecommended
Coats
1–2recommended
Flash-off
5–15recommended
Recoat
30–120 minrecommended
Sanding between coats
Never sand the stain itself. You cut through the colour on edges. Denib only after the first sealer coat.recommended

15–20 cm from the work, 50 % overlap, gun square to the surface, steady speed. Back off the fluid on vertical panels. Do edges and ends first, then the face.

Conventional spray

Nozzle
1.2–1.4 mmrecommended
Pressure · air
2.5–3.5 barrecommended
Consumption
80–100 g/m²dealer

More overspray than HVLP, but often more even on large surfaces.

Airmix (air-assisted airless)

Nozzle
0.18–0.23 mmrecommended
Pressure · fluid
8–20 barrecommended
Pressure · air
1–2 barofficial
Consumption
80–100 g/m²dealer

For production runs. Skip airless for stain: too much material, and it blotches.

Process and compatibility

Substrate preparation
Sand solid wood or veneer to P150–P220 (open-pored P150–P180, fine-pored P180–P220) and de-dust. If you dilute with water, pre-wet, dry and knock back the raised grain first.recommended
Goes over
bare wood
Overcoat compatibility
polyester,polyurethane,nitrocellulosedatasheet
Goes under
ATS20
Sanding
Don't sand the stain. The first denib goes on the first sealer coat.recommended
Temperature and humidity
15–25 °C, RH 50–70 %; above ~25 °C use slow S90recommended
Don'ts
  • Don't cut it with tap water. Deionised only (dealer).
  • Don't lay it on in one heavy coat. You get blotches and runs.
  • Don't seal before the solvent or water has fully gone.

Storage

Packaging
1 Ldealer
Shelf life
8 months from deliverydatasheet
Storage temperature
18–25 °C, tightly closed, protected from moisturedatasheet

Safety: (Generic advice, not from an SDS.) Once cut with S10/S12/S90 it is highly flammable. Spray in an extracted booth, wear an A2-filter respirator and nitrile gloves, and keep it away from ignition sources. I couldn't find an SDS for CLT50.

Sources

Value tags: “official”, “dealer”, “catalog”, “schedule” are Technocolor data; “workshop” is from our own datasheets; “recommended” is our engineering estimate (hover to see the reasoning).

Not covered by the sources
  • Solids content and flash point not published; density only as a series range
  • No official or dealer drying times. Workshop times are derived; series-TDS figures added (solvent drying printed as 30", which is ambiguous)
  • Shelf life and storage temperature come only from the 2006 series TDS (CLT50 not named in it)
  • Exact hue of «Donato» is undescribed: no colour card or recipe, base vs composed unknown
  • Consumption discrepancy: dealer 80–100 g/m² (ready mix) vs series TDS 5–20 g/m² (apparently concentrate)
  • No lightfastness rating specific to CLT50
  • No CLT50-specific TDS or SDS found; only the Milesi CLT series TDS (rev. I, Oct 2006) was used. The web-search budget for this run was exhausted, so no fresh CLT50/Donato search was possible
  • There is NO official t-color.ru page for CLT50 (not in families.json/src/products); all CLT50-specific data is from the dealer page, plus series TDS and LZC97 from official sibling pages (CLT1–CLT10)
  • CLT series is not in the 2025-2026 catalog (it lists CTU/CPS/CTH instead)
  • No official finishing schedule uses CLT50
  • Properties of LZC97, CFH1 and CFS1 are not published (dealer pages for CFS1 return 404)
  • Dealer viscosity 24±2 has no cup; it matches the series TDS ISO 3 mm figure, so it is NOT a DIN4 value
  • Series TDS solvent drying/overcoat (30 s / 1 min with LZC1000) is far faster than the derived shop figures (S10/S12/S90 are not LZC1000)