Wintrol® B-40Na – 40% Sodium Benzotriazole in Water

Wintrol® B-40Na is 40% sodium benzotriazole solution in water. This solution is a corrosion inhibitor used for yellow metal protection. Wintrol® B-40Na is most commonly used in liquid products with an alkaline pH. Industrial uses include: cooling tower products, engine coolants, metal working fluids, inks and cleaners.

Wintrol B-40Na Diagram

Product Code:  30BT040L


Assay:  39.5 – 41.0
pH (10% Solution)(25°C):  11.2 – 11.7
Color:  (Gardiner):  < or equal to 5
Odor:  No Odor
Visual Appearance:  Colorless to Pale Yellow Liquid
Density @ 25ºC:  1.168 (9.74 lbs/gal)
Chloride:  50 ppm Max


6 Gallon Carboys:  55 lbs.
55 Gallon Drums:  500 lbs.
275 Gallon Totes:  2,500 lbs.

Personal Safety

Caution: caustic product. Avoid exposure to eyes, skin or clothing. Good personal hygiene and housekeeping should be followed when handling this product. Refer to SDS for handling, exposure and cleanup information.

Shipping and Storage

Store in cool, dry, ventilated area away from any heat source. Keep container tightly closed and in upright position when not in use. Keep from freezing. Wincom, Inc. recommends storing this product at or above 23°F to avoid crystallization of benzotriazole.