Sodium Pyroantimonate (C5H4Na3O6Sb) Sb2O5 Assay 64%~65.6% be used as flame retardant
Sodium Pyroantimonate
| Trade Name & Synonyms | Sodium Hexahydroxy antimonate, Sodium Hexahydro antimonate, Sodium Hexahydroxo antimonate,Industry Sodium Antimonate Trihydrate, Sodium Antimonate Hydration for Electronic, Sodium Antimonate. | |||
| Cas No. | 12507-68-5,33908-66-6 | |||
| Molecular Formula | NaSb(OH)6,NaSbO3·3H2O, H2Na2O7Sb2 | |||
| Molecular Weight | 246.79 | |||
| Appearance | White Powder | |||
| Melting Point | 1200℃ | |||
| Boiling Point | 1400℃ | |||
| Solubility | Soluble in tartaric acid, sodium sulfide solution, concentrated sulfuric acid. Slightly soluble in alcohol, silver salt. Insoluble in acetic acid, dilute alkali, dilute in organic acid and cold water. | |||
Enterprise Specification for Sodium Pyroantimonate
| Symbol | Grade | Sb2O5(%) | Na2O | ForeignMat.≤(%) | Particle Size | ||||||||
| As2O3 | Fe2O3 | CuO | Cr2O3 | PbO | V2O5 | Moisture Content | 850μm Residueon Sieve(%) | 150μm Residueon Sieve(%) | 75μm Residueon Sieve(%) | ||||
| UMSPS64 | Superior | 64.0～65.6 | 12.0～13.0 | 0.02 | 0.01 | 0.001 | 0.001 | 0.1 | 0.001 | 0.3 | As customers' requirement | ||
| UMSPQ64 | Qualified | 64.0～65.6 | 12.0～13.0 | 0.1 | 0.05 | 0.005 | 0.005 | - | 0.005 | 0.3 | |||
Packing: 25kg/Bag, 50kg/Bag, 500kg/Bag, 1000kg/Bag.
What is Sodium Pyroantimonate used for?
The following is a marketing copy optimized for Sodium Pyroantimonate, highlighting its technical differentiation and industry application value:
Sodium Pyroantimonate: A new generation of high-performance flame retardants and glass clarification solutions
As the core representative of pentavalent antimony compounds, Sodium Pyroantimonate has become an irreplaceable green additive in the field of high-end manufacturing due to its unique chemical stability and functionality:
1. Core technology for high-end glass manufacturing
- Photovoltaic glass super-transparent engine: As a special clarifier for ultra-white glass of photovoltaic panels, it effectively eliminates microbubbles, increases light transmittance ≥ 0.5%, and directly increases the power generation efficiency of components
- Display Industry Color Master: Precisely control the refractive index in CRT/LED display glass to ensure color purity and simultaneously achieve defoaming-clarification-color stabilization triple functions
- Gem-level processing guarantee: Used for artificial gem glass melting, suppresses lattice defects, and achieves VVS-level clarity standards
2. Revolutionary flame retardant technology upgrade (compared with traditional antimony oxide)
| Performance Dimension | Advantages of Sodium Pyroantimonate | Industrial Value |
| Flame retardant efficiency | Synergistic flame retardant effect increased by 40% | Reduced by 30% to achieve UL94 V-0 grade |
| Material compatibility | Nearly zero depolymerization reaction | Guarantee the integrity of sensitive polymer chains such as PET |
| Optical influence | Transmittance > 99% / Coloring power decreased by 65% | Maintain the original color of engineering plastics |
| Thermal stability | Decomposition temperature > 550℃ | Adapt to high temperature injection molding/extrusion process |
Core application scenarios:
✅ Flame retardant shell of the new energy battery pack
✅ 5G base station engineering plastic parts
✅ Ship-grade flame-retardant cable sheath
✅ Fireproof coating of military building materials
3. Irreplaceability in special scenarios
- Chemical passivation characteristics: No side reactions occur in halogen-containing flame retardant systems, avoiding equipment corrosion caused by traditional Sb₂O₃
- Color customization capability: As a sodium antimony oxide complex, it meets the color rendering requirements of special ceramics/glazes cobalt blue-titanium yellow series
- Compliance advantages: Passed RoHS 3.0 certification and complies with the harmless electronic and electrical product directive
Empirical case
▶ After a TOP5 photovoltaic glass factory adopted it, the yield rate increased by 2.1%, saving $2.3M annually
▶ PET connector application solution for an automotive electronics company, passed the 1500h wet heat aging test with zero performance degradation
As a globally scarce pentavalent antimony technology carrier, we provide full-cycle services from molecular structure design to application scenario verification to help customers break through material limits.
> Technical Note: According to the IPCS International Chemical Safety Card, the low mobility of sodium pyroantimonate (NaSbO₃) in polymer systems significantly reduces the risk of occupational exposure.
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