Spadns

Product Description

SPADNS (Sodium 2-(Parasulfophenylazo)-1,8-dihydroxy-3,6-naphthalenedisulfonate) is a high-purity colorimetric reagent widely used for the determination of fluoride ion concentration in water, wastewater, and environmental samples. The reagent forms a red complex with zirconium, which becomes colorless upon fluoride binding, allowing precise measurement of fluoride via spectrophotometric or colorimetric analysis.

SPADNS reagent is a standard analytical solution in drinking water testing, industrial effluent analysis, and environmental monitoring, following internationally recognized methods such as APHA, ASTM, and ISO.

Key Features

• Chemical Name: Sodium 2-(Parasulfophenylazo)-1,8-dihydroxy-3,6-naphthalenedisulfonate
  • Chemical Formula: C₁₆H₁₀N₂Na₂O₁₁S₃
  • CAS Number: 19507-19-6
  • Appearance: Red-orange crystalline powder or solution
  • Purity: Analytical Reagent Grade
  • Solubility: Completely soluble in water
  • Stability: Stable under normal laboratory conditions
  • Detection Method: Colorimetric (Fluoride-Zirconium-SPADNS complex)
  • Wavelength for Measurement: 570–580 nm

Applications

Laboratory & Research

• Used for quantitative determination of fluoride ions in water samples.
  • Employed in environmental and public health laboratories for water quality monitoring.
  • Used in spectrophotometric fluoride assays and standard method verification.

Industrial & Environmental Testing

• Applied in drinking water, groundwater, and industrial effluent analysis.
  • Used by municipal water authorities and environmental research centers.
  • Essential for quality control in chemical, fertilizer, and glass industries.

Safety & Handling

• Hazard: May cause irritation to eyes and skin; avoid inhalation of dust.
  • Precautions: Handle with gloves, protective eyewear, and lab coat.
  • Storage: Store in a cool, dry place, tightly closed and protected from light.
  • Disposal: Dispose of according to local chemical waste disposal regulations.

Why Choose SPADNS Reagent from M/S Bright Scientific Co.?

• Analytical-grade quality for precise and reproducible fluoride measurements.
  • Prepared according to standard testing methods (APHA, ASTM, ISO).
  • Trusted by laboratories for environmental, industrial, and water analysis.
  • Competitive pricing for both ready-to-use solutions and powder reagents.
  • Fast, safe, and nationwide delivery across Bangladesh.

Price in Bangladesh

Available in 100 mL, 250 mL, 500 mL, and 1 L bottles, as well as powder form for reagent preparation.
Bulk discounts available for environmental labs, research centers, and water authorities.

Contact Information

M/S Bright Scientific Co.
📞 Phone: 01711285976