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White sodium borate borax powder

Product Detail

Borax

Sodium borate raw material in decahydrate (B2O3 36%, B 11%) and pentahydrate (B2O3 48%, B 15%) grades, granular or powder, pH 9-10. Values are typical and confirmed per batch COA.

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What it is / When to use

Sodium borate boron source for sowing and blending

Borax is a sodium borate boron raw material supplied as decahydrate (Na2B4O7·10H2O, B2O3 36.0%, B 11.0%, CAS 1303-96-4) and pentahydrate (B2O3 48.0%, B 15.0%, CAS 12179-04-3), both at pH 9-10. RunziChem exports granular and powder grades for machine-sowing, fertilizer blending, and foliar boron programs.

  • What it is Sodium borate decahydrate (B 11%) / sodium borate pentahydrate (B 15%), granular or powder.
  • When to use Use it as an economical boron source for machine-sowing and bulk blends; compare Boric Acid (B 17%) or SoluBor (B 21%) for higher-solubility foliar routes.
  • Honesty note specifications are typical for evaluation; final values are confirmed per batch COA.
B 11-15%Borax
White sodium borate borax powder

Specification

Typical specification for buyer evaluation

Formula, CAS, boron content, appearance, solubility, packaging, and document availability are shown for procurement screening. Final values are confirmed per batch COA.

ProductBorax (sodium borate)
Chemical nameSodium borate decahydrate / sodium borate pentahydrate
FormulaNa2B4O7·10H2O / Na2B4O7·5H2O
CAS1303-96-4 (decahydrate) / 12179-04-3 (pentahydrate)
Grade/PurityFertilizer grade; granular or powder
AppearanceWhite granular or powder
Content — decahydrateB2O3 36.0%; B 11.0%; pH 9-10; typical values confirmed per batch COA
Content — pentahydrateB2O3 48.0%; B 15.0%; pH 9-10; typical values confirmed per batch COA
SolubilityWater-soluble borate raw material
ApplicationsBoron source for machine-sowing, fertilizer blending, and foliar programs
Packaging25 kg / 50 kg export bags, jumbo bags (1,250 kg), and custom packaging on request
DocumentsTDS, current batch COA, and SDS available on request

Applications

Where Borax fits

Confirm crop, rate, compatibility, and local label requirements before application.

Machine-sowing boron

Granular borax suits mechanised sowing where a uniform boron carrier is placed with the seed or fertilizer.

Fertilizer blends

Decahydrate B2O3 36% is a standard boron input for bulk-blend and compound fertilizer production.

Foliar tank mixes

Finer pentahydrate powder (B2O3 48%) dissolves faster for foliar and drip boron corrections.

Decahydrate grade

Na2B4O7·10H2O is listed with B2O3 36.0%, B 11.0%, pH 9-10, CAS 1303-96-4.

Compare boron sources

Compare against Boric Acid (B 17%) and SoluBor / disodium octaborate (DOT) at B 21%.

Batch documents

TDS, COA, and SDS support procurement and formulation review.

Packaging & Documents

Export packaging with batch-level documents

RunziChem supports standard export bags and procurement documents for review before order confirmation.

  • Packaging 25 kg / 50 kg export bags, jumbo bags (1,250 kg), and custom packaging on request.
  • Documents TDS, current batch COA, SDS, packing list, and shipment documents on request.
  • Quality system ISO 9001-certified quality management, with final product values confirmed by batch COA.

Procurement note

Send target grade, annual volume, destination port, packaging preference, and application route. The export team can reply with the current specification, document set, and quotation.

25 kg 50 kg Jumbo bags Custom pack TDS COA SDS

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Buyer FAQ

Borax questions

What is the difference between borax decahydrate and pentahydrate?
Both are sodium tetraborate (Na2B4O7) differing only in water of crystallisation. Decahydrate (CAS 1303-96-4) carries more bound water, so it is more dilute at B2O3 36.0% / B 11.0%, while pentahydrate (CAS 12179-04-3) is more concentrated at B2O3 48.0% / B 15.0%. Both list pH 9-10. RunziChem supplies both; choose by your blend and dissolution needs.
How is Borax different from Boric Acid or SoluBor (DOT) boron grades?
Borax is sodium tetraborate (Na2B4O7) with B 11% (decahydrate) or B 15% (pentahydrate) and pH 9-10, best for machine-sowing and blending. Boric Acid (H3BO3, CAS 10043-35-3) carries B 17% at a lower pH, and SoluBor / disodium octaborate (DOT) reaches B 21% for fully soluble foliar sprays. Confirm which boron source your formulation specifies before ordering.
Which borax form suits soil blending versus foliar boron?
Granular borax decahydrate (B2O3 36%) is convenient for machine-sowing and bulk-blend fertilizers, while the finer pentahydrate powder (B2O3 48%) dissolves faster for tank mixes. For high-purity, fully soluble foliar boron RunziChem also offers SoluBor (DOT) at B 21%. The exact form, mesh, and grade are confirmed against your application route before order.
Are the boron and purity values guaranteed?
No. Website figures for borax, such as B2O3 36% / B 11% for the decahydrate and B2O3 48% / B 15% for the pentahydrate, are typical values for buyer screening. The current batch certificate of analysis (COA) confirms the final assay, boron content, particle size, and appearance for the lot you receive.

Request Borax documents and a quote.

Send annual volume, destination market, packaging, and application route. RunziChem can provide TDS, current batch COA, SDS, and a formal quotation.

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