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Sodium Sulfide Nonahydrate (Na₂S·9H₂O) — CAS 1313-84-4, premium quality industrial grade
★ Exclusive Manufacturer of Sodium Sulfide Nonahydrate in Asia✓ Only Export Quality Na₂S·9H₂O
MT Chemtech

A workhorse industrial reagent for leather tanning, mining flotation, textile dyeing, and pulp & paper. Supplied in 25 kg bags, HDPE drums, and FIBC jumbo bags — exported to 40+ countries.

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Purity
98%+
Min order
1 MT
Production capacity
20 MT/month
Export to
40+ countries
CAS 1313-84-4Na₂S·9H₂O98%+ purity20 MT/month

Sodium Sulfide Nonahydrate (Na₂S·9H₂O) — Manufacturer, Supplier & Exporter

Sodium Sulfide Nonahydrate (also written Sodium Sulphide Nonahydrate, formula Na₂S·9H₂O, CAS 1313-84-4, EINECS 215-211-5, HS Code 28301010) is a high-purity inorganic sulfide reagent supplied as off-white to pale yellow crystalline flakes. It is the industry-standard reducing and sulfurizing agent used in leather dehairing & tanning, copper / lead / zinc ore flotation, sulfur black and sulfur dye manufacture, kraft pulp & paper, heavy-metal precipitation in effluent treatment, and as a precursor for sodium polysulfide, thiols and sodium thiosulfate. We manufacture 20 metric tons per month of Na₂S·9H₂O at 98%+ purity, packed in 25 kg PP bags, 50 kg HDPE drums and 1 MT FIBC jumbo bags, with COA & MSDS per batch, UN 1849 / Class 8 compliant export documentation, and FOB / CIF shipments to 40+ countries across India, the Middle East, Africa, Southeast Asia, Europe and the Americas.

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01 — Applications

Where Na₂S·9H₂O is used

From tanneries to mining concentrators, sodium sulfide nonahydrate underpins core industrial chemistry.

Leather Tanning

Dehairing of hides and skins — the largest single-use of sodium sulfide nonahydrate in the leather industry.

Mining & Flotation

Activator and depressant in the flotation of copper, lead, zinc, and antimony sulfide ores.

Textile Dyeing

Reducing agent for sulfur and vat dyes — produces deep, color-fast shades on cotton fabrics.

Pulp & Paper

Core reagent in the Kraft pulping process to break lignin bonds and free cellulose fibers.

Chemical Synthesis

Intermediate for sulfur dyes, rubber chemicals, polysulfides, thiols, and sodium thiosulfate.

Water & Effluent Treatment

Precipitates heavy metals (Cu, Pb, Hg, Cd) from industrial wastewater as insoluble sulfides.

Production capacity — 20 MT/month

Bulk orders, scheduled monthly

Our plant produces 20 metric tons of Sodium Sulfide Nonahydrate (Na₂S·9H₂O) every month — enough capacity to handle FCL containers, recurring shipments, and long-term annual supply contracts. Lock in volume, packing, and freight terms ahead of time.

  • › 1 – 20 MT single shipments
  • › Monthly recurring 5 / 10 / 20 MT
  • › 20FT & 40FT FCL containers
  • › Annual contracts up to 240 MT
  • › 25 kg bags, HDPE drums, FIBC
  • › COA / MSDS per batch
Place bulk order Request annual contract
Monthly capacity
20 MT
Annual capacity
240 MT
Min order
1 MT
Lead time
In stock
02 — Properties

Product specification

Technical data sheet for our standard industrial grade. Custom specs available on request.

Off-white to light grey/greenHygroscopicStrong alkalineReducing agentSoluble in water
Chemical nameSodium Sulfide Nonahydrate
FormulaNa₂S · 9H₂O
CAS Number1313-84-4
EINECS215-211-5
Molecular weight240.18 g/mol
AppearanceOff-white to light grey / light green crystalline solid
Purity (Na₂S)≥ 30% (nonahydrate basis)
Melting point50 °C
Boiling point920 °C (decomposes)
Density1.43 g/cm³
Solubility in waterVery soluble — alkaline solution
pH (5% solution)12 – 13
Hazard classUN 1849 · Class 8
03 — Packing

Shipping & packaging options

Moisture-resistant, palletized, ready for sea or air freight.

Sodium sulfide nonahydrate industrial packaging drums and bags

25 kg PP bags

Woven polypropylene bags with PE inner liner, palletized 1,000 kg.

50 kg HDPE drums

Sealed HDPE drums for moisture-sensitive shipments and air freight.

1,000 kg jumbo bags

FIBC big-bags with discharge spout for bulk industrial use.

Custom OEM

Private-label and customer-specified packing for re-export markets.

04 — Export demand

Global market footprint

Sodium sulfide nonahydrate sees consistent global demand driven by leather, mining, and textile sectors.

South & Southeast Asia

India, Bangladesh, Vietnam, Indonesia — leather & textile clusters

Middle East & Africa

Egypt, Turkey, Nigeria, Ethiopia — tanneries & mining

Latin America

Brazil, Mexico, Peru, Chile — mining flotation demand

Europe & CIS

Italy, Spain, Russia — specialty chemical & dye industries

Exporting to your country?

Get FOB / CIF pricing, lead time, and freight options for your destination port.

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05 — Order online

How to order Na₂S·9H₂O

Four steps from inquiry to shipment — transparent pricing, COA per batch, export-ready paperwork.

  1. 01

    Submit requirement

    Tell us quantity (MT), packing (25 kg bag / drum / FIBC), destination port, and Incoterm (FOB / CIF / EXW).

  2. 02

    Receive quotation

    We respond within 24 hours with unit price, lead time, validity, and payment terms (T/T or L/C).

  3. 03

    Confirm & pay PI

    Sign the Proforma Invoice and remit advance per agreed terms. We block production capacity for your batch.

  4. 04

    Production & shipment

    Batch produced, third-party COA / MSDS issued, container stuffed, B/L and export docs released.

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Place an online order with your shipping terms, or send a custom inquiry for tailored grades, packing, and freight options.

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