Fluorine-free synthetic foam concentrate SELVA 3 Vina Foam

Fluorine-Free Synthetic Foam Concentrate (Low Viscosity)

A low-viscosity fluorine-free synthetic foam concentrate used to extinguish Class B fires (hydrocarbon fuels) and Class A fires.

It is formulated from organic solvents, hydrocarbon-based surfactants, and other performance-enhancing additives. It does not contain any halogenated organic compounds. The foam concentrate and foam solution are readily biodegradable and environmentally friendly.

This fluorine-free synthetic foam is suitable for use on both Class A and Class B fires.

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Product Description – SELVA 3

SELVA 3 is a low-viscosity, fluorine-free concentrated firefighting foam designed to extinguish Class B fires (hydrocarbon fuels) and Class A fires.

SELVA 3 is formulated from organic solvents, hydrocarbon-based surfactants, and other performance-enhancing additives. It does not contain any halogenated organic compounds. Both the foam concentrate and foam solution are readily biodegradable and environmentally friendly.

SELVA 3 forms a foam blanket that separates oxygen from the fuel or fire zone, thereby effectively extinguishing fires. Its firefighting performance is comparable to fluorinated foam concentrates when used on hydrocarbon fuel fires.

SELVA 3 can be used as a replacement for AFFF (Aqueous Film Forming Foam) concentrates.

SELVA 3 is suitable for use with fresh water to extinguish Class B fires (hydrocarbon fuels). It is not suitable for fires involving polar solvents.

SELVA 3 can also be used for Class A fires due to its excellent wetting properties.

SELVA 3 can be applied using low-, medium-, and high-expansion foam discharge equipment (such as nozzles, monitors, foam chambers, etc.). However, since it does not form an aqueous film, its performance with spray nozzles is not as effective as AFFF-type foam concentrates.

Technical Specifications

No.	CATEGORY	PROPERTY	VALUE
1	APPLICATION RATE	Recommended use of SELVA 3 concentrate
		• Class A fires	3%
		• Hydrocarbon fires	3%
2	PHYSICAL PROPERTIES OF CONCENTRATE	Appearance / Color	Clear liquid, yellow
		Density at 20°C	1.017 ± 0.01
		pH at 20°C	8.0 ± 1.0
		Viscosity at 20°C, 375 s⁻¹ (Brookfield)	< 5 mPa·s
		Freezing point	≤ –4°C
3	FOAM SOLUTION PROPERTIES	Surface tension at 20°C	≤ 30 mN/m
		Interfacial tension (with Cyclohexane)	4.0 ± 1.0 mN/m
		Low expansion ratio	≥ 7
		25% drainage time	≥ 8 minutes

4	STANDARDS AND CERTIFICATION	SELVA 3 has been tested and certified in accordance with the following standard: TCVN 7278:2003.
5	COMPATIBILITY WITH STORAGE MATERIALS	SELVA 3 is compatible with standard carbon steel and materials made from stainless steel (SUS 304 and SUS 316) or copper alloys. Additionally, recommended materials include aluminum and certain plastics (PE, PVC, PET).
		Avoid using SELVA 3 with equipment and fittings made from zinc or galvanized materials, as this may cause corrosion.
6	SHELF LIFE	The shelf life of SELVA 3 is 10–20 years, provided that storage and handling follow the manufacturer’s instructions.
		Samples of SELVA 3 foam concentrate should be sent to the manufacturer or a certified laboratory for annual quality testing.

7	STORAGE AND HANDLING	Storage temperature	From 0°C to +50°C
		Freezing condition	If the product freezes during storage or transportation, thawing will fully restore its performance
		Recommendation	Stir well after thawing before use
8	ENVIRONMENTAL AND TOXICOLOGICAL PROPERTIES	Aquatic toxicity	No adverse effects on aquatic environments, including both sensitive and tolerant species
		Biodegradability	Nearly completely biodegradable (BOD28 / COD ≈ 0.99)
		Wastewater treatment	Due to excellent biodegradability, wastewater treatment is generally not required