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Stains and dyesDye

CLT52

CLT52 Kromolux dye concentrate, iroko

Highly concentrated transparent dye (binder-free stain) from Milesi's Kromolux series in iroko, a warm golden-brown shade named after the African hardwood (check the exact tone against a dealer sample). Very clear and even; at higher strength it goes dark while staying transparent. Dilutes with water or solvent, with or without a binder, and mixes with every other dye in the series in any ratio.

  • Staining all kinds of timber, veneer and solid
  • Furniture, fronts, mouldings and frames, general wooden articles
  • Toning and evening out colour variation under PE, PU and NC lacquers
  • Iroko/teak-look warm brown tones on light timber

Mix calculator

g
Thinner750.0 %

When: Listed by Technocolor as a thinner. The Milesi TDS uses LZC97 as a small-share co-solvent alongside the main thinner (see the TDS rows).

Additive

Ratio 100 : 750.0

ComponentWeigh out
CLT52part A58.8 g
LZC97Thinner441 g
Total500 g

Covers roughly 5.56 m² at 90 g/m².

Pot life of the mix: not applicable — single-component, no reaction; keep diluted mix closed and use within the shift.

Ask about CLT52

Answers are based on the CLT52 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 thinner — for fine-pored timber (beech, birch, maple, alder) and short flash-off between operations.

    Thinner selection per the Technocolor 2025–2026 catalog thinner table. S10 is also the gun-cleaning solvent per its official page.

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

    Medium evaporation — medium-pored timber (cherry, walnut, tight ash); the default for a solvent-borne stain.

    S12 is the dye thinner per its official page, and it is the thinner used in the dye steps of the official schedules.

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

    Slow — open-pored timber (oak, ash), large panels, hot shop: stays wet longer, fewer blotches and lap marks.

    Dealer lists S90 as 'slow dye thinner'.

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

    Water dilution — less odour/VOC, raises the grain more and dries much slower (Milesi TDS: 8 h at 20 °C vs. minutes on solvent).

    Deionised (distilled) water only — tap water makes the dye flocculate and lose colour stability (dealer note). Before a water stain, raise the grain with a damp sponge, dry and denib at P180–P220.

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

    Listed by Technocolor as a thinner. The Milesi TDS uses LZC97 as a small-share co-solvent alongside the main thinner (see the TDS rows).

    LZC97's exact function is not documented by Technocolor; no product page.

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

    Binder for the solvent-borne stain (with S10/S12/S90): locks the dye in, less bleeding/lifting when the sealer goes on, more even colour on end grain.

    Role: binder. CFS1 = solvent-borne and CFH1 = water-borne follows from the schedules (CFS1 paired with S12, CFH1 with water); the dealer's ОР/ВР labels are listed in the opposite order.

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

    Binder for the water-diluted stain.

    0 % = plain dye stain; with binder the colour holds better under the sealer.

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

    Milesi's suggested solvent dilution. LZC1000 is a Milesi code; in the Technocolor line its place is taken by S10/S12/S90 per the official page.

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

    Milesi's suggested water dilution.

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

    Milesi TDS: manual spray (5–20 g/m²), fixed automatic airmix/airless and swinging-arm guns (10–20 g/m²) — 500–800 %; rotating carousel (5–20 g/m²) — 700–1500 %.

  • CFS1 / S12Additive
    % by weight: CFS1 200 % + S12 500 %schedule

    Raised-panel doors (PU): stain 80–100 g/m², 5 min at 20–25 °C, then PTS20+C25+S50 sealer.

    The finishing schedule names the generic code 'CTU' (universal transparent solvent dye; per the 2025–2026 catalog it takes the same S10/S12/S90 thinners at 500–1000 % as CLT). CLT52 has no t-color.ru page; sibling CLT dyes (e.g. CLT4) sit in the 'Universal dyes' section, so the recipe is carried over as a guide — our interpretation, not an explicit CLT52 instruction.

  • CFS1 / S12Additive
    % by weight: CFS1 150 % + S12 500 %schedule

    Mouldings and frames (UV): stain 80 g/m², 5 min at 25–30 °C, then VTS40041 UV sealer.

    The finishing schedule names the generic code 'CTU' (universal transparent solvent dye; per the 2025–2026 catalog it takes the same S10/S12/S90 thinners at 500–1000 % as CLT). CLT52 has no t-color.ru page; sibling CLT dyes (e.g. CLT4) sit in the 'Universal dyes' section, so the recipe is carried over as a guide — our interpretation, not an explicit CLT52 instruction.

  • CFH1 / WATERAdditive
    % by weight: CFH1 400 % + вода/water 1000 %schedule

    Open-pore oak kitchen fronts: stain 80–100 g/m², 20 min at 20–25 °C, PTS60+C26+S50 sealer.

    This schedule is written for the water dye CTH, not CLT (page title is 'Open-pore finishing of oak kitchen fronts (Acr.)' although the URL says beech-veneer worktops PU); 400 % CFH1 exceeds the 0–200 % the dealer gives for CLT52 — stay within 0–200 % for CLT52.

Percentages are per 100 parts of component A.

Characteristics

Viscosity
24 ± 2 s, 24 ± 2 s
Drying · Conditions
20 °C (TDS states temperature only; no RH given)
Drying · Room temp (solvent)
30 s (printed 30" — LZC1000 thinner)datasheet
Drying · Room temp (water)
8 h (water thinner)datasheet
Drying · IR drying 60 °C (solvent)
10 mindatasheet
Drying · IR drying 60 °C (water)
20 mindatasheet
Pot life
not applicable — single-component, no reaction; keep diluted mix closed and use within the shiftrecommended
Thixotropy
norecommended
Gloss
not applicable — no filmrecommended

Colours

  • CLT52 · iroko

Application

HVLP

Nozzle
1–1.3 mmrecommended
Pressure · fluid
gravity cup, no fluid pressurerecommended
Pressure · air
1.5–2 bar inlet (gun trigger pulled); ≈0.5–0.7 bar at caprecommended
Spray viscosity
as diluted (500–1000 %), ~water-thin — do not thin to a cup timerecommended
Consumption
80–100 g/m² (dealer: 'Распыление: 80-100 г/м2'; mix state not stated, read as ready mix)dealer
Coats
1 even full wet pass (2 light crossing passes on large panels); add colour by a second pass, not by floodingrecommended
Flash-off · Solvent
5 min at 20–25 °C (CFS1+S12 mix)schedule
Flash-off · Water
20 min at 20–25 °C (CFH1+water mix)schedule
Recoat · Sealer (solvent)
after 1 min (thinned with LZC1000)datasheet
Recoat · Sealer (waterborne)
after 8 h (thinned with water) at 20 °C; TDS forced drying IR + warm air 60 °C = 20 min (TDS gives no separate overcoat time for forced drying)datasheet
Sanding between coats
do not sand the stain coat itself; denib the first sealer coat at P240–P320recommended

Hold the gun square at 15–20 cm, 50 % overlap. On profiles do edges and recesses first, then the field. Stir the mix before filling.

Conventional spray

Nozzle
1–1.2 mmrecommended
Pressure · air
2–3 bar at gunrecommended
Consumption
80–100 g/m² (dealer: 'Распыление: 80-100 г/м2'; mix state not stated, read as ready mix)dealer

Classic air spray — the mainstream method per the methods page (up to 40 % transfer).

Airmix (air-assisted airless)

Nozzle
0.18–0.23 mm (07–09 thou), narrow 20–40° fanrecommended
Pressure · fluid
4–8 barrecommended
Pressure · air
0.8–1.5 barrecommended
Consumption
10–20 g/m² (TDS figure — appears to be concentrate, see notes)datasheet
Dilution %
500–800 %datasheet

The Milesi TDS states 10–20 g/m² for fixed automatic airmix (500–800 % dilution) — given that dilution this reads as concentrate, i.e. roughly 60–180 g/m² of ready mix; the dealer gives 80–100 g/m².

Airless

Nozzle
0.18–0.23 mm (07–09 thou)recommended
Pressure · fluid
30–60 barrecommended
Consumption
10–20 g/m² (TDS figure, likely concentrate)datasheet
Dilution %
500–800 %datasheet

For hand work prefer airmix/HVLP — airless has a coarser fan and more blotch risk.

Automatic carousel

Consumption
5–20 g/m² (rotating carousel, TDS; dilution 700–1500 %)datasheet
Dilution %
700–1500 %datasheet

Milesi TDS: automatic rotating spray machine (carousel) — 5–20 g/m², dilution 700–1500 %. This is not electrostatic; there is no electrostatic data for CLT.

Process and compatibility

Substrate preparation
Sand flats P150 → P180 → P220; profiles with sanding mats/sponges K60–K80schedule
Goes over
bare sanded wood
Sanding
Never sand the dyed surface directly; sand the first sealer coat P240–P320 (flats) / K120 (profiles) per schedulerecommended
Temperature and humidity
TDS data at 20 °C (no humidity stated)datasheet
Don'ts
  • Don't dilute with tap water — deionised only
  • Don't exceed 200 % CFS1/CFH1 binder
  • Don't flood the surface — make a second light pass instead
  • Don't sand the bare dye coat — sand the sealer
  • Don't seal a water-diluted stain before it is fully dry (TDS: ~8 h at 20 °C or 20 min at 60 °C)

Storage

Shelf life
8 months from delivery (series TDS; CLT52 not named)datasheet
Storage temperature
18–25 °C, tightly closed, protected from moisturedatasheet
Packaging
1 kgdealer

Safety: Composition and hazard class are not published (no CLT52 SDS found). Treat the concentrate and S10/S12/S90 mixes as flammable: spray in an extracted booth, no ignition sources, A2P2 respirator and nitrile gloves; keep solvent rags in a closed metal bin.

Used in finishing systems

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_pct (blank in Milesi TDS, not on official/dealer pages)
  • lightfastness rating (no sourced figure)
  • hardness/elasticity/chemical resistance — not applicable to a binder-free dye on its own
  • LZC97 function and Technocolor product page (no official or dealer page)
  • CFS1/CFH1 product pages and their own data (no official/dealer page found)
  • TDS room-temp drying with solvent printed as 30" — by the sheet's own notation 30 seconds (flash), consistent with overcoat after 1'; no full-dry figure
  • consumption discrepancy: dealer (and sibling CLT4 official page) 80–100 g/m² vs Milesi TDS 5–20 g/m² (apparently concentrate)
  • SDS / hazard classification for CLT52
  • no Technocolor-issued TDS for CLT52; data sheet used is Milesi's (IVM) CLT series TDS, rev. I, Oct 2006
  • CLT not covered in Technocolor 2025–2026 catalog (only CTU/CPS/CTH dyes)
  • no official t-color.ru page for CLT52; LZC97 and water-as-thinner on the official side come from sibling CLT4
  • CLT52 absent from the 2006 Milesi TDS colour list — density/SG unknown; series viscosity/drying assumed to apply
  • iroko tone is an interpretation of the colour name; no swatch published
  • no CLT52-specific TDS/SDS found (web search budget exhausted this session; sibling CLT runs found none)
  • pack sizes other than 1 kg unknown
  • no electrostatic data for CLT (TDS 'rotating spray gun (carousel)' is not electrostatic)
  • specific gravity: CLT52 not in TDS SG table (series 0.945–0.965 ± 0.05; CLT10 1.215) — weight→volume equality in dealer table untested
  • src/pdf/milesi_clt5_sds.pdf is an HTML page, not an SDS — no sibling SDS available