Sulfur and sulfuric acid
Sulfuric Acid 93–98% — Bulk Supplier Price Quote
Bulk sulfuric acid supply — request a price quote for your concentration, parcel size and delivery terms
Key parameters — Sulfuric Acid 93–98%
Full specification — Sulfuric Acid 93–98%
| H2SO4 (sulfuric acid) | 93.0–98.0% |
| Ash | 0.05% max |
| Iron (Fe) | 50 ppm max |
| Lead (Pb) | 10 ppm max |
| Appearance | Clear oily liquid, colourless to pale yellow |
| Density (at stated conc.) | 1.830–1.840 g/cm³ at 20 °C |
| Free SO3 (at 98% grade) | Trace, per origin COA |
| Process type | Contact process (DCDA) |
| HS code | 2807.00 |
Product overview — Sulfuric Acid 93–98%
Phosphate producers and mining operators can request a bulk supplier quote for sulfuric acid 93–98% H2SO4 matched to concentration, parcel size and Incoterms. Sulfuric acid ranks among the highest-volume industrial chemicals in global trade. Concentrated grades at 93–98% H2SO4 serve as the primary reagent in wet-process phosphoric acid manufacture, copper and zinc hydrometallurgical leaching, petroleum alkylation, titanium dioxide pigment production and lead-acid battery electrolyte formulation. Our export grade delivers clear oily liquid appearance with iron capped at 50 ppm and ash at 0.05% max, suitable for phosphate attack circuits where metal contamination would colour the downstream acid.
Merchant acid originates from contact-process plants burning elemental sulfur or recovering SO2 from non-ferrous smelters across CIS, North Africa and the Middle East. Typical buyers include integrated fertilizer complexes securing merchant acid when own sulfur-burning units run at reduced rates, independent phosphoric acid producers without captive sulfur supply, mining operators running heap-leach or agitated-leach circuits, and industrial consumers requiring consistent H2SO4 strength for water-treatment or metal-pickling formulations.
Concentrated sulfuric above 93% is hygroscopic — it absorbs atmospheric moisture on exposure, diluting strength and generating heat. Receivers dilute to working concentration (typically 70–78% for phosphate rock attack) at the plant site. HS code 2807.00. UN 1830 (Class 8 corrosive).
Full product details
Loading ports & logistics — Sulfuric Acid 93–98%
Contract MOQ is 100 MT — fulfilled by carbon steel ISO tank assemblies (~21–24 MT net per unit) on FOB Black Sea or MENA origins. Concentrated sulfuric above 93% passivates carbon steel; unlined tanks below that concentration corrode aggressively and require lining assessment before reload. Standard dry bulk carriers cannot receive liquid H2SO4. We coordinate three principal delivery modes depending on parcel size and receiver infrastructure.
Carbon steel ISO tank containers hold approximately 21–24 MT net per unit and suit multi-modal routes to inland fertilizer and mining plants with dedicated acid unloading bays. Ideal for parcels of 100–500 MT assembled from multiple tank units on FOB Black Sea or MENA origins. Each unit must carry a previous-cargo certificate confirming no water, alkali or organic residue.
Dedicated acid road tankers and coastal chemical tankers move parcels of 500–3,000 MT on short-sea routes between refinery terminals and Mediterranean, Red Sea or Indian Ocean discharge ports. Carbon steel or 316L stainless cargo tanks are standard for concentrated acid above 93%; nitrogen blanket may be applied during extended storage to limit moisture uptake.
Parcel chemical tankers handle larger industrial contracts above 3,000 MT on long-haul routes to dedicated acid jetties in India, Turkey, West Africa and Southeast Asia. FOB loading at exporter-nominated chemical berth; CFR and CIF quotes include tank freight, marine insurance and discharge-port compatibility check before firm offer. Typical lead time 14–28 days from contract execution to loading window.
Packaging & documentation — Sulfuric Acid 93–98%
Cargo ships as liquid H2SO4 in carbon steel ISO tank containers, dedicated acid road tankers or parcel chemical tankers — no drummed form exists for bulk merchant grade at 93%+. Each lot is accompanied by a mill certificate of analysis showing H2SO4 concentration, iron, ash and lead results, safety data sheet (SDS) per GHS, commercial invoice, tank list, bill of lading and certificate of origin. Concentration is confirmed by density measurement converted to H2SO4 percentage via calibrated hydrometer, with titration against NaOH standard on the COA.
Third-party inspection (SGS, Bureau Veritas or equivalent) at loading can be arranged on buyer request. Tank cleanliness and previous-cargo certificate are mandatory before ISO reload; we issue cleaning confirmation with the shipping instructions package. IMO Class 8 corrosive documentation and emergency response guide (ERG) are included with every shipment.
FAQ — Sulfuric Acid 93–98%
What H2SO4 concentration do wet-process phosphoric acid plants typically order?
Merchant buyers specify 93–98% H2SO4 and dilute in-plant to 70–78% for phosphate rock attack. Higher concentration reduces water freight on long-haul tank routes; the exact grade within the band depends on origin plant output and receiver dilution capacity.
Which tank materials are approved for concentrated sulfuric acid above 93%?
Carbon steel is the industry standard for storage and transport above 93% H2SO4 — the acid passivates the steel surface. Below 93%, sulfuric becomes aggressively corrosive to unalloyed steel; receivers must confirm tank lining or alloy grade before accepting diluted parcels.
Related products — Sulfuric Acid 93–98%
- Phosphoric Acid — downstream product from sulfuric acid attack on phosphate rock
- Formic Acid — organic acid alternative for tanning, silage and latex coagulation
- Phosphate Rock — upstream feedstock consumed in wet-process acid circuits
- Ammonium Sulphate — nitrogen-sulfur fertilizer from the sulfur value chain
