Conductivity Response of Sodium Sulfate (Na₂SO₄)
Sodium sulfate exhibits a high electrical conductivity response in aqueous solutions because it fully dissociates and contains a divalent anion (SO₄²⁻), which contributes strongly to ionic conduction.
SaltRelative Conductivity ResponseNaClModerateNaNO₃ModerateNa₂SO₄HighNa₂CO₃High (but suppressed strongly in IC)
Sulfuric acid remains highly conductive
Produces a large, late-eluting peak
Major cause of baseline elevation and peak masking
Temperature: ~2% increase per °C
Concentration: Linear at low ppm, non-linear at high ppm
Matrix: Other ions increase ionic strength
pH: Minor effect for sulfate
Sodium sulfate has a disproportionately high conductivity response because it generates three ions and includes a divalent, highly conductive sulfate ion.
This makes it a dominant interferent in conductivity-based water analysis and suppressed IC.
Overview of Sulfate of Soda (Sodium Sulfate)
- Formula: Na₂SO₄
- Types:
- Anhydrous (≈99% Na₂SO₄, for detergents, glass)
- Decahydrate (Glauber’s salt) (Na₂SO₄·10H₂O, lower-grade applications)
- Primary Applications:
- Glass manufacturing (~40–45% of global use)
- Detergent industry (~20–25%)
- Pulp & paper (~15%)
- Textile & chemical industry (~15%)
CountryKey Regions / SuppliersNotes
ChinaJiangsu, Shandong, XinjiangLargest exporter; integrates natural sodium sulfate & by-product from chemical plants
IndiaGujarat (Vadodara, Bharuch), RajasthanMainly by-product from chemical industries; exports to SE Asia & Middle East
PakistanKarachi, SindhSmall-scale production, mostly regional export
Thailand / Vietnam / IndonesiaIndustrial plants near portsNiche supply, mainly for detergents & glass
Key Importers:
- Southeast Asia (Malaysia, Indonesia, Philippines)
- Australia & New Zealand
- South Korea & Japan (high-grade glass)
Trade Routes:
- Sea freight via Shanghai, Qingdao, Nhava Sheva, Port Klang
- FOB & CIF terms common
- China: 0.7–1 million MT/year
- India: 50,000–100,000 MT/year
- Minor exporters: 5,000–20,000 MT/year
- TypePrice (USD/MT FOB Asia)Industrial grade anhydrous230–270Decahydrate / technical grade180–220Specialty / high-purity300+
Bulk bags (25–50 kg)
Jumbo bags (1 MT)
- Bulk vessels / containers
SDS / MSDS compliance
Hazard classification: Generally non-hazardous
- Phytosanitary certificate for some countries
China dominates Asia-Pacific exports; India is a competitive secondary supplier.
Glass & detergent industries drive demand; Southeast Asia is a major import market.
- Export success factors: consistent purity, moisture control, bulk logistics, and regulatory documentation.
Chemical Name: Sodium Sulfate (Na₂SO₄)
Forms:
- Anhydrous (≈99%) – used in detergents, glass, pulp & paper
- Decahydrate / Glauber’s Salt (Na₂SO₄·10H₂O) – for detergents, textiles
Primary Applications in Asia-Pacific:
- Glass manufacturing (~40–45%)
- Detergents (~20–25%)
- Pulp & paper (~15%)
- Textiles and chemicals (~15%
- CountryProduction Hubs / NotesTypical Export FocusChinaJiangsu, Shandong, XinjiangLargest exporter; supplies industrial & high-purity gradesIndiaGujarat (Vadodara, Bharuch), RajasthanBy-product & natural grades; exports to SEA, Middle EastPakistanKarachi, SindhSmall-scale, mostly regional exportThailand / Vietnam / IndonesiaIndustrial plants near portsNiche supply for detergents & glass
Southeast Asia: Malaysia, Indonesia, Philippines
East Asia: Japan, South Korea
- Oceania: Australia, New Zealand
Ports: Shanghai, Qingdao, Nhava Sheva (India), Port Klang
- Shipping terms: FOB / CIF common
China: 0.7–1 million MT
India: 50,000–100,000 MT
- Others: 5,000–20,000 MT
- GradeUSD/MTIndustrial anhydrous230–270Decahydrate180–220High-purity / specialty300+
- GradePurityUsesIndustrial / By-product95–99%Glass, detergents, pulp & paperDecahydrate85–95%Detergents, textilesFood / Technical99.5–99.9%Specialty chemicals
Packaging:
- Bulk bags (25–50 kg), Jumbo bags (~1 MT), bulk containers
Quality Control:
- Moisture <0.5% for decahydrate
- Avoid chloride contamination
Regulatory Requirements:
- SDS/MSDS compliance
- Phytosanitary certificates in some countries
China dominates Asia-Pacific exports, with India as a competitive secondary supplier.
Glass and detergent industries drive demand; Southeast Asia is a major import market.
- Successful exports require consistent purity, moisture control, bulk logistics, and regulatory documentation.
- sodium sulphate
- sodium sulfate
- Na2SO4
- CAS 7757-82-6 (anhydrous)
- CAS 7727-73-3 (decahydrate)
- E514
- EC 231-820-9
- sodium sulphate SDS
- - sodium sulphate MSDS
- Informational: what is sodium sulphate, uses of sodium sulphate
- Commercial: sodium sulphate price per kg, supplier comparison
- Transactional: buy sodium sulphate online, bulk sodium sulphate for sale
- - Long-tail: sodium sulphate for detergents, sodium sulphate for glass industry
HIGH SULFATE CONCENTRATION EFFECTS..LAXMI ENTERPRISE,VADODRA
