Sodium Tungstate Dihydrate Na2wo4 CAS 10213-10-2 CAS 13472-45-2

• Customization: Available
• CAS No.: 10213-10-2; 13472-45-2
• Formula: Na2wo4; Na2wo4.2H2O
• Model NO.: 99%
• EINECS: 209-067-2
• Appearance: White Crystal
• Grade Standard: Industrial Grade
• Transport Package: 25 Kg Per Bag or Drum
• Specification: ≥ 99%
• Trademark: JinYu
• Origin: China

Product Description

Product Description

Basic Information

• Chemical Name: Sodium Tungstate
• Formula:
  • Dihydrate: Na2WO4·2H2O (most common form)
  • Anhydrous: Na2WO4
• CAS Numbers:
  • Dihydrate: 10213-10-2
  • Anhydrous: 13472-45-2
• Molar Mass:
  • Dihydrate: 329.85 g/mol
  • Anhydrous: 293.81 g/mol
• Classification: Oxo-salt of tungsten, belonging to tungstate compounds.

Physical Properties

Property	Value/Description
Appearance	Dihydrate: Colorless to white crystalline powder or granules; Anhydrous: White powder, highly hygroscopic
Density	Dihydrate: 3.25 g/cm³; Anhydrous: 4.17 g/cm³
Melting Point	Dihydrate: ~100°C (loses crystal water); Anhydrous: ~698°C (decomposes)
Solubility (25°C)	Highly soluble in water (~73 g/100 mL), solution is alkaline; Insoluble in organic solvents like ethanol and diethyl ether
pH (1% Aqueous Solution)	~8.5-9.5 (alkaline due to hydrolysis)

Applications

1. Metallurgy and Metal Processing
   • Tungsten Smelting: Intermediate for producing WO3, tungsten powder, tungsten carbide (WC), etc.
   • Surface Treatment:
     • Rust prevention in steel industry (component of alkaline etching solutions).
     • Surface treatment agent for aluminum alloys to enhance coating adhesion.
2. Chemicals and Catalysts
   • Catalysts:
     • Used in petrochemicals (e.g., hydrogenation) and textile dyeing (oxidation catalysts).
     • Precursor for polyoxometalate catalysts (e.g., phosphotungstic acid) in esterification and isomerization.
   • Corrosion Inhibitor: In industrial circulating water to prevent steel corrosion.
3. Pigments and Ceramics
   • Pigments: Produces tungstate pigments (e.g., zinc tungstate ZnWO4) for yellow coloring in coatings and plastics.
   • Ceramics: Added to ceramic glazes to improve gloss and heat resistance.
4. Pharmaceuticals and Agriculture
   • Medicine: Historically used for schistosomiasis treatment (now rare); under research for anti-tumor/antiviral applications.
   • Agriculture:
     • Micro-nutrient fertilizer (limited use due to low plant demand for tungsten).
     • Component of insecticides (when blended with other compounds).
5. Other Uses
   • Fireproof Materials: Impregnation for fire-resistant wood and paper.
   • Electronics: Preparation of tungstate scintillation crystals (e.g., Cs2NaBiCl6) for radiation detection.
   • Analytical Reagents: Used in colorimetric assays for cholesterol and alkaloids in blood.

Safety and Toxicity

• Toxicity:
  • Low toxicity; oral LD50 in rats ~2.5 g/kg (dihydrate).
  • Dust irritates eyes and respiratory tract; prolonged contact may cause skin allergies.
• Safety Measures:
  • Wear dust masks, goggles, and gloves; avoid inhalation or skin contact.
  • Store in dry, sealed containers away from acids, food, and oxidizers.
• Environmental Notes:
  • Tungsten is a heavy metal; wastewater must be treated (e.g., precipitation to remove WO4²) to prevent water pollution.

Storage and Transportation

• Storage:
  • Sealed in cool, dry places; dihydrate requires moisture-proof storage (to avoid caking), anhydrous form must be tightly sealed to prevent hygroscopy.
• Transportation:
  • Classified as a non-hazardous chemical, but avoid mixing with acidic substances. Protect from moisture and sunlight during transit.

Product Parameters

 

Packaging & Shipping

Liquid products	Drum of 5kg ,10 kg ,25 kg ,50 kg 200 kg ,250 kg . 1000 kg IBC drum. TANK with 20 tons ,25 tons .
Solid products	Bag of 1 kg ,2 kg ,5 kg ,25 kg ,500kg ,1000 kg . Drum of 25 kg and 50 kg.

Packaging can be customized according to customer requirements.

Company Profile

Qingdao Jinyu Chemical Co., LTD,which is located in Qingdao City, China, with registered capital of RMB 10 million, is a dynamic chemical import and export enterprise with customer demand as its own responsibility. The founder has been engaged in the chemical industry for more than 20 years. With professional technical and marketing personnel, diversified cooperative factories with synthetic technology and efficient logistics management, we provide services to customers all over the world. After years of hard work, we have selected a number of excellent chemical production cooperative enterprises in China. These enterprises have their own advantages in different chemical synthesis fields. They have passed the strict inspection of suppliers by many customers and formed a long-term and stable strategic partnership with customers. With our partners' excellent equipment, well-trained employees and mature technology, we also continue to provide customers with more products.

Our Advantages