PRODUCT DATASHEET

---

TECHNICAL DATA

 

Property	Value
Colour	Grey
Gloss	Matt
Volume Solids	Approx. 55%
Recommended DFT / Coat	50 – 75 microns
Theoretical Covering Capacity	11.00 sq.m/ltr @ 50 microns 7.33 sq.m/ltr @ 75 microns
Drying Time at 30°C & 50% RH	Surface dry: 30 minutes Hard dry: 16 hours Full cure: 7 days
Overcoating Interval at 30°C	Min: 16 hours Max: Unlimited, provided surface is free from corrosion, contamination & zinc salt
Shelf Life @ 30°C (cool & dry)	At least 6 months
Flash Point	Not less than 15°C

---

SURFACE PREPARATION & SUBSTRATE CONDITION

Steel

• Blast clean to Sa 3 / Sa 2.5 (Swedish Specification)
• Blasting profile (Rz): 40 – 70 microns
• Heavily pitted steel is not acceptable

Environmental Conditions

• Substrate temperature: at least 3°C above dew point, but below 50°C
• Relative humidity: above 50%

 

---

MIXING

• Do not open packing until immediately before use
• If settling is observed in base or hardener, loosen with hand stirrer, then use power-driven stirrer
• Add the hydrolysate (hardener) into zinc slurry (base) under continuous stirring
• Strain mixture through 30–60 mesh screen
• Maintain constant agitation until batch is depleted

Mixing Ratio (by volume)

Component	Ratio
Zinc Slurry (Base) : Hydrolysate (Hardener)	1 : 1

Parameter	Value
Induction Time	None
Pot Life @ 30°C	4 hours

 

---

APPLICATION

Air Spray

Parameter	Specification
Recommended Thinner	T-144
Volume of Thinner	10 – 25%
Nozzle Orifice	1.5 – 3.0 mm
Nozzle Pressure	0.3 – 0.4 MPa (≈ 3–4 atm; 43–57 psi)

Airless Spray

Parameter	Specification
Recommended Thinner	T-144
Volume of Thinner	10 – 25%
Nozzle Orifice	0.48 – 0.64 mm (0.019 – 0.025 inch)
Nozzle Pressure	15 MPa (≈150 atm; 2100 psi)

Important Notes

• Maintain constant agitation of mixture
• Spray gun must be at correct distance to achieve wet and smooth coating
• Thinner quantity must be adjusted carefully for optimum film formation
• Coating must appear wet and smooth immediately after application
• Refer to Field Guidelines for Inorganic Zinc Rich Coatings

Limitations

• Not suitable for immersion in:
  • Alkaline liquids (pH > 9)
  • Acidic liquids (pH < 5)
    unless suitable topcoats are applied

---

OVERCOATING PROCEDURE

• Zinc-rich coatings are porous → pinholes may form due to solvent popping
• To minimize pinholes:
  1. Apply a mist coat as first pass
  2. Allow entrapped air to escape
  3. Then apply a full coat
• Prolonged exposure before top-coating leads to white rust (zinc corrosion products)
• Must be removed completely before applying subsequent coats

 

---

SAFETY INFORMATION

• Avoid inhalation of solvent vapours and paint mist
• Avoid contact with skin and eyes
• Provide forced ventilation in confined areas
• Even with ventilation, use respiratory, skin, and eye protection while spraying
• Refer to Material Safety Data Sheet (MSDS) before use

 

---

STORAGE & PACKING

Storage

• Store in a cool, dry place
• Follow local regulations

Packing

• 20 litres

 

---

 

REFERENCES

Product Data Sheet – APCOSIL 605 IZSS
Issued by Asian Paints Ltd. – December 2008
Document Version: PC 2568
Source: https://www.asianpaints.com

Technical Guidelines & Explanatory Notes
Last accessed: 28 May 2025
Reference link:
https://www.asianpaints.com/service-support/technical-guidelines

Note: Always refer to the latest version of the Product Data Sheet and official documentation for accurate and updated technical information.