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Description

Sodium tetraborate pentahydrate (CAS 12179-04-3 ), commercially known as borax pentahydrate, is an inorganic boron salt supplied as a partially hydrated form of borax. It functions as a pH buffer, corrosion inhibitor, biocide, and flame retardant across a broad range of industrial and consumer product applications. In detergents and industrial cleaning formulations, borax pentahydrate boosts alkalinity and enhances surfactant performance, improving soil and grease removal. Coatings and adhesive manufacturers use it as a crosslinking agent for PVA-based systems and as a corrosion inhibitor in metalworking fluids. Flame-retardant treatments for cellulosic textiles, paper, and wood products rely on its boron content to meet fire-resistance specifications. In water treatment, it serves as a buffering agent to stabilize process pH, and in agriculture it provides a soluble boron source for micronutrient fertilizer blends. Sodium tetraborate pentahydrate is available as a free-flowing white powder or granules, with granule size influencing dissolution rate and handling characteristics for different process requirements. Standard supply grades include technical grade for industrial use and refined grades meeting USP or pharmaceutical specifications. Bulk supply is common in 25 kg bags or bulk sacks, with concentration typically expressed as percentage B₂O₃ content for industrial purchasing specifications. This versatile chemical ensures stability and performance in diverse manufacturing environments globally. Contact us for supply of Sodium tetraborate pentahydrate Request Quote

Other Names (Synonyms)

borax pentahydrate | sodium borate pentahydrate | SG2N20S03U | Boron sodium oxide(B4Na2O7), pentahydrate | Boric acid(H2B4O7), disodium salt, pentahydrate | RefChem:887925 | Boron sodium oxide (B4Na2O7), hydrate (1:5) | Disodium tetraborate pentahydrate

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Density1.815
AppearanceBorax is a noncombustible (an inherent fire retardant), bluish-gray or green, odorless crystalline powder or granules.

Safety & Handling

Danger
GHS08· Health HazardGHS07· Irritant

Hazard Statements

H319Causes serious eye irritation
H335May cause respiratory irritation
H360May damage fertility or the unborn child
H370Causes damage to organs

Precautionary Statements

P203Obtain, consult and follow expert instructions for use.
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P271Use only outdoors or in a well-ventilated area.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P318IF exposed or concerned, get medical advice.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P316Get emergency medical help immediately.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P233Store in a well-ventilated place. Keep container tightly closed.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.