421-500ML MG Chemicals, 421-500ML Datasheet - Page 5

• Manufacturer Part Number: 421-500ML
• Description: Solder, Fluxes & Accessories LIQUID TIN
• Manufacturer: MG Chemicals

Specifications of 421-500ML

• Product: Fluxes & Pastes
• Application: For tin plates copper circuits
• Boiling Point: 100 °C
• Chemical Component: Fluoboric Acid, Stannous Fluoroborate, Thiourea
• Ph: 1
• Solubility: 100%
• Specific Gravity: 1.2
• Weight: 17 oz
• Description/function: Liquid Tin
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Product Information Data Sheet
Liquid Tin
ANALYTICAL
Procedure Number: AP.0532.d
I. Procedure Description: Titrimetric method measuring the percent activity of Liquid Tin.
II. EQUIPMENT & SETTINGS
A. 5.0 mL class “A” pipette
B. 50.0 mL burette
C. 250 mL Erlenmeyer flask
D. 25 mL graduated cylinder
Ill. REAGENTS
A. pH 5 acetate buffer - To 245 grams of sodium acetate trihydrate, add 58 mL of
B. Methylthymol blue indicator - Dissolve 0.1 gram of mdhylthymol blue indicator
C. 0.1 0 M EDTA - Weigh 36.324 g of disodium EDTA dihydrate. Dissolve in, 1 liter
IV. PROCEDURE
A. Pipette a 5 mL of sample of working bath into a 250 mL Erlenmeyer flask, and add
B. Add 25 mL of pH 5 acetate buffer.
C. Add I 0 drops of methylthymol blue indicator
D. Titrate with 0.1 0 M EDTA to a faint yellow endpoint
E. Record the result
V. CALCULATIONS
A. Percent Activity Liquid Tin = (mL 0.10 M EDTA used) x (M EDTA) x (85.9)
powder in 50 mls of D.l. water.
volumetric fiask with Dl water.
Glacial Acetic Acid. Dilute to 1 liter with Dl water.
about 75 mL of D.I. water.
(MG Cat. No. 421)