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{"title":"Sodium Thiosulfate (Hypo) - Photographic Fixing Agent, Water Dechlorinator, and","imgUrl":"https:\/\/img.chinax.com\/nimg\/2c\/29\/2e0d679177fd8816f3bc77de890e-200x200-1\/sodium_thiosulfate_28hypo_29_photographic_fixing_agent_2c_water_dechlorinator_2c_and.jpg","attrs":{"Brand Name":"SiChun HongJian","Model Number":"Sodium thiosulfate","Place of Origin":"China","Minimum Order Quantity":"10Tons"}}
{"title":"Ammonium Sulfate Crystal 21% N - Nitrogen Fertilizer with Fire Retardant and","imgUrl":"https:\/\/img.chinax.com\/nimg\/30\/97\/78e0011b208e64f9f10055957789-200x200-1\/ammonium_sulfate_crystal_21_25_n_nitrogen_fertilizer_with_fire_retardant_and_yeast_nutrient_properties.jpg","attrs":{"Brand Name":"SiChun HongJian","Model Number":"Ammonium Sulfate","Place of Origin":"China","Minimum Order Quantity":"10Tons"}}
{"title":"High Purity 99% Sodium Thiosulfate Pentahydrate for Photographic Fixer and","imgUrl":"https:\/\/img.chinax.com\/nimg\/ad\/af\/9ee46c38a4653eefd6d15b2ed442-200x200-1\/high_purity_99_25_sodium_thiosulfate_pentahydrate_for_photographic_fixer_and_cyanide_antidote_applications.jpg","attrs":{"Brand Name":"SiChun HongJian","Model Number":"Sodium thiosulfate","Place of Origin":"China","Minimum Order Quantity":"10Tons"}}
{"title":"Sodium Thiosulfate Anhydrous Na\u2082S\u2082O\u2083 99% Purity Water Dechlorinator and Non","imgUrl":"https:\/\/img.chinax.com\/nimg\/26\/3a\/72b32df895a3175840a39bc42e44-200x200-1\/sodium_thiosulfate_anhydrous_na_e2_82_82s_e2_82_82o_e2_82_83_99_25_purity_water_dechlorinator_and_non_cyanide_gold_leaching_agent.jpg","attrs":{"Brand Name":"SiChun HongJian","Model Number":"Sodium thiosulfate","Place of Origin":"China","Minimum Order Quantity":"10Tons"}}
{"title":"Sodium Thiosulfate (Hypo) Crystals - Photographic Fixer, Water Dechlorinator &","imgUrl":"https:\/\/img.chinax.com\/nimg\/b7\/1f\/235c98b84e591f86773fa05f67a6-200x200-1\/sodium_thiosulfate_28hypo_29_crystals_photographic_fixer_2c_water_dechlorinator_26_cyanide_antidote_for_industrial_use.jpg","attrs":{"Brand Name":"SiChun HongJian","Model Number":"Sodium thiosulfate","Place of Origin":"China","Minimum Order Quantity":"10Tons"}}
{"title":"Industrial Grade Polyacrylamide PAM Water Treatment Agent Soluble in Water Clear","imgUrl":"https:\/\/img.chinax.com\/nimg\/8b\/45\/1b4deb00445763d3f29951644872-200x200-1\/industrial_grade_polyacrylamide_pam_water_treatment_agent_soluble_in_water_clear_colorless_liquid.jpg","attrs":{"Brand Name":"sichuan hongjian","Model Number":"25kg\/bag","Place of Origin":"China","Minimum Order Quantity":"10 tons"}}
{"title":"Sodium Thiosulfate 98% Industrial Grade Curing Agent And Water Treatment","imgUrl":"https:\/\/img.chinax.com\/nimg\/c4\/49\/6098df16e349ce3335b88c35ba0b-200x200-1\/sodium_thiosulfate_98_25_industrial_grade_curing_agent_and_water_treatment_dechlorination_agent.jpg","attrs":{"Brand Name":"SiChun HongJian","Model Number":"Sodium thiosulfate","Place of Origin":"China","Minimum Order Quantity":"10Tons"}}
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
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
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Distributor/Wholesaler
Year Established:
2013
Total Annual:
7000000-10000000
Employee Number:
130~150
Ecer Certification：
Verified Supplier
Sichuan Hongjian Chemical is a comprehensive enterprise specializing in the trade of chemical products. Since entering the chemical industry in 1995, it has always been dedicated to providing supply chain services for chemical raw materials, fine chemicals and environmental protection ... Sichuan Hongjian Chemical is a comprehensive enterprise specializing in the trade of chemical products. Since entering the chemical industry in 1995, it has always been dedicated to providing supply chain services for chemical raw materials, fine chemicals and environmental protection ...
