Download Solubor resources

Need more technical details for your boron fertilizer application?
Explore product resources below. 
Solubor > Technical Details

Data Sheet

Discover more product details, including technical features and primary uses of Solubor.

Download PDF

Safety Data Sheet

Find proper handling and storage information, as well as important supplier details.

Safety data sheet

Specifications Sheets

Get details on chemical and physical specifications.

Specification sheets

Field Studies

Explore our field studies to see how Solubor improves crop performance.

Field studies

Solubor technical overview

Solubor is a highly concentrated sodium borate (Disodium Octaborate Tetrahydrate, Na2B8O13.4H2O). You’ll find no added impurities or ingredients. 


Technical features include: 
  • 20.5% boron content 

  • Particle size of <75 microns

  • Offers higher concentration of boron than boric acid in solution—0.9% B (w/w) versus 0.6% B (w/w) at room temperature

Download product data sheet
Chemical
Boron (B): 20.5%
Material required for 1 lb (.45kg) of B: 7 lb (3.18kg)

Physical
  • Screen: % cumulative.
  • + 200: 8 
  • - 200: 92
Bulk density
Loose pack:
25 lb/ft3 (400.46 kg/m3)
Tight pack: 35 lb/ft3 (560.6 kg/m3)

Containers
Bulk option (super bags):
1700 lb (771 kg)
Multiwall paper bags with polyethylene moisture resistant barrier: 50 lb (22.7 kg)

Solubor DF technical overview

Solubor DF is a mixture of disodium tetraborate, boric acid, and sodium pentaborate. The chemical composition and physical size of Solubor DF promote rapid dissolution in water.

SOLUBOR DF RESOURCES

Chemical
Boron (B): 17.2%
Material required for 1 lb (.45kg) of B: 5.77 lb (2.62kg)
Bulk Density
700-720 kg/m3
Containers
Solubor DF is available in 2.20 lb (1000 kg) IBCs, and in multiwall paper bags with a polyethylene moisture resistant barrier for the 11 lb (5 kg) size, and in polyethylene bags for the 26.4 lb (12 kg) and 55.1 lb (25 kg) sizes.

Additional resources

Solubor

When you need a boron fertilizer for foliar application, you need to make sure you’re getting Solubor from U.S. Borax.

Watch the video

Solubility of Solubor in liquid fertilizers

Solubor is an excellent boron source for inclusion in liquid fertilizers because it is readily soluble and does not react with other components of these fertilizers.

Learn More

Amounts of Solubor to mix into spray tanks to supply desired boron rates

Solubor is highly water soluble, and is commonly applied in foliar sprays. Because the season for the most effective foliar application of boron is short, foliar sprays must be prepared quickly and accurately.

Learn More

Fruit tree foliar nutrient sprays

Foliar nutrient sprays are commonly applied to fruit trees. Boron is immobile in most plant tissues so boron may not be readily transported to developing flower buds. Solubor can be effectively applied with dormant oil-insecticide sprays during the dormant stages of most fruit trees.

Learn More

Minute in the Field: Solubor's Cost-Effectiveness

Dan Luepkes from Corn Warriors talks to U.S. Borax about how Solubor is more cost effective than other boron delivery products.

Watch the video

Boron in Corn and Soybeans

Corn requires high levels of all nutrients to ensure maximum economic yields. Soybeans, like all legumes, have a high boron requirement.

Download

Get more Solubor information

U.S. Borax, part of Rio Tinto, is a global leader in the supply and science of borates—naturally-occurring minerals containing boron and other elements. We are 1,000 people serving 650 customers with more than 1,800 delivery locations globally. We supply around 30% of the world’s need for refined borates from our world-class mine in Boron, California, about 100 miles northeast of Los Angeles. Learn more about Rio Tinto.

Copyright © 2024 Rio Tinto. All Rights Reserved.