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Sodium Thiosulfate (Hypo) - Photographic Fixing Agent, Water Dechlorinator, and Cyanide Antidote for Industrial and Medical Use
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Sodium Thiosulfate (Hypo) - Photographic Fixing Agent, Water Dechlorinator, and Cyanide Antidote for Industrial and Medical Use
| Moq: | 10 tonnellate |
| Prezzo: | Please contact customer service |
| Imballaggio standard: | Sacchi in sacchi e tonnellate |
| Periodo di consegna: | Circa sei settimane |
| Metodo di pagamento: | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Capacità di alimentazione: | 100.000 tonnellate all'anno |
Informazioni Dettagliate
Luogo di origine
Cina
Marca
SiChun HongJian
Numero di modello
Thiosolfato di sodio
Documento
Formula chimica:
NA2S2O3
Numero di connessione di CAS:
7772-98-7
Numero di accesso EINECS:
231-867-5
Densità:
1.667 g/cm³
aspetto:
polvere cristallina bianca
Descrizione della sicurezza:
S23；S24/25；S26；S36
Descrizione del pericolo:
R36/37/38
Evidenziare:
Photographic Fixing Agent Sodium Thiosulfate
,Water Dechlorinator Hypo
,Cyanide Antidote Antichlor
Descrizione del prodotto
Sodium Thiosulfate Crystals (Hypo)
Chemical Formula: Na₂S₂O₃·5H₂O (pentahydrate)
Product Overview
Sodium Thiosulfate, commonly known as "hypo" or "antichlor," is a vital inorganic compound appearing as colorless, transparent monoclinic crystals or white crystalline powder. Odorless with a cooling, bitter taste, this multifunctional chemical workhorse serves diverse industries including photography, water treatment, mining, healthcare, and textiles.
Key Properties: Unique reducing properties, complexation ability, and chlorine-neutralizing capacity
Photography & Imaging Applications
Photographic Fixing Agent
As the essential component of photographic fixing baths, sodium thiosulfate dissolves unexposed silver halide crystals (AgBr/AgI) through formation of soluble silver-thiosulfate complexes [Ag(S₂O₃)₂]³⁻.
Archival Stability: Ensures image permanence by preventing subsequent darkening
Optical Clarity: Produces neutral image tones with D-min below 0.04
Processing Efficiency: Complete fixation achieved within 3-8 minutes at 20°C with 20-40% solutions
Modern Digital Applications
Medical Radiography: X-ray film processing in healthcare facilities
Motion Picture Archiving: Preservation of historical film collections
Photochemical Synthesis: Silver nanoparticle production for conductive inks
Water & Environmental Management
Municipal Water Treatment
Chlorine Neutralization: Reacts stoichiometrically with residual chlorine
Dosage Precision: 0.1-0.5 mg/L eliminates 1 mg/L chlorine without taste alteration
Aquaculture Protection: Protects fish gill membranes from chlorine toxicity
Industrial Water Systems
RO Membrane Protection: Prevents oxidative degradation of polyamide membranes
Cooling Tower Maintenance: Extends equipment lifespan by 30-40%
Wastewater Compliance: Reduces chlorine levels for discharge standards
Mining & Metallurgy Applications
Non-Cyanide Gold Extraction
Environmentally sensitive mining operations benefit from sodium thiosulfate-based leaching:
Eco-Friendly Alternative: 500x less toxic than cyanide
Gold Recovery Rates: 85-92% for oxide ores
Selective Leaching: Minimal copper dissolution compared to cyanide
Copper-Ammonia Catalysis
Catalyst System: Cu²⁺/NH₃ at 1:4 molar ratio
Optimal Conditions: pH 9-10, 40-60°C
Regeneration Potential: 70-80% thiosulfate recyclability
Medical & Pharmaceutical Uses
Cyanide Poisoning Treatment
As part of the cyanide antidote kit with sodium nitrite:
Detoxification Mechanism: Converts cyanide to thiocyanate
Clinical Protocol: 12.5g IV infusion over 10 minutes (adult dose)
Synergistic Efficacy: Increases survival rate significantly
Pharmaceutical Applications
Calciphylaxis Treatment: 25g intravenous infusions for uremic patients
Contrast Media Reducer: Minimizes iodine contrast nephropathy
Topical Formulations: 10-20% solutions for tinea versicolor treatment
Textile & Chemical Industries
Textile Processing
Chlorine Removal: 0.5-1.0% solutions eliminate bleaching residuals
Dye Reduction: Vat dye reduction potential
Fabric Preservation: Prevents cellulose degradation
Chemical Synthesis
Reducing Agent: For nitro compounds and disulfide bond cleavage
Analytical Chemistry: Iodometric titration standard
Leather Industry: Chrome tanning auxiliary and unhairing agent
Quality Specifications & Safety
Technical Standards
| Parameter | Industrial Grade | Photographic Grade | USP Grade |
|---|---|---|---|
| Na₂S₂O₃·5H₂O | ≥99.0% | ≥99.5% | ≥99.5% |
| Sulfide (as S) | ≤0.0005% | ≤0.0001% | ≤0.0001% |
| Heavy Metals | ≤10 ppm | ≤5 ppm | ≤5 ppm |
| Water Insolubles | ≤0.01% | ≤0.005% | ≤0.005% |
| pH (50g/L) | 6.5-8.0 | 6.8-7.2 | 6.5-8.0 |
Storage & Handling
Stability: Decomposes above 48°C
Incompatibilities: Strong acids, oxidizers, silver salts
Packaging: 25kg moisture-proof bags with polyethylene liner
Shelf Life: 24 months in cool, dry conditions
Environmental Profile
Biodegradability: >90% in 28 days
Aquatic Toxicity: EC50 (Daphnia) >100 mg/L
Waste Treatment: Neutralize with calcium hypochlorite before disposal
Product Grades & Support
Our sodium thiosulfate crystals are produced through crystallization purification technology achieving exceptional clarity and consistency.
Specialized Grades Available
Photographic Grade: Ultra-low heavy metals for archival processing
Water Treatment Grade: Optimized dissolution rate for continuous dosing
Medical Grade: Sterile manufacturing under cGMP conditions
Mining Grade: Enhanced stability for heap leaching applications
Technical Support Services
Application Optimization: Customized dosing systems for water treatment
Process Validation: Method development for gold recovery plants
Regulatory Compliance: Assistance with EPA and FDA submissions
Certifications: ISO 14001 Environmental Management and ISO 9001 Quality Systems
Support: 24/7 technical support and emergency response protocols
Support: 24/7 technical support and emergency response protocols
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