SUNCHEM

Sodium pyrithione (SPT)

Sodium pyrithione (SPT) is the sodium salt of pyrithione (2-mercaptopyridine-1-oxide), a broad-spectrum biocide with strong antimicrobial activity against bacteria and fungi at low concentrations. It is used as an antidandruff active, a preservative in water-based coatings, and an antimicrobial additive for plastics and textiles. SUNCHEM…

3811-73-2
  • Lot COA with every shipment
  • Samples for your trials
  • Technical support for your trial
CAS No.3811-73-2
FormulaC5H4NNaOS
Synonyms2-Pyridinethiol, 1-oxide, sodium salt (8CI,9CI);Sodium, (2-pyridylthio)-, N-oxide (7CI);1-Oxo-2-pyridinethiol sodium salt;2-Mercaptopyridine N-oxide sodium salt;2-Pyridylthiol-N-oxide sodium salt;Sodium 2-mercaptopyridine 1-oxide;Sodium pyridine-1-oxide-2-thiolate;Sodium pyrithione;Thione (reagent);2-Pyridinethiol,1-oxide, sodium salt (1:1);

Product overview & key benefits

Sodium pyrithione (SPT) is the sodium salt of pyrithione (2-mercaptopyridine-1-oxide), a broad-spectrum biocide with strong antimicrobial activity against bacteria and fungi at low concentrations. It is used as an antidandruff active, a preservative in water-based coatings, and an antimicrobial additive for plastics and textiles. SUNCHEM supports international buyers with Sodium pyrithione (SPT) sourcing from qualified Chinese producers, with quality documentation, export coordination, and logistics support.

Technical specifications

PropertyReference value
Density1.22 g/cm3
Melting Point-25 °C
Boiling Point253.8 °C at 760 mmHg
Flash Point107.3 °C
Solubility54.7 g/100 mL
Appearanceclear solution
Risk Codes22-36/37/38-36/38
Safety26-36-24/25-37/39

Existing product reference data. Confirm the specification of the offered grade before ordering.

Applications

Antidandruff shampoo active ingredient
Water-based paint and coating preservative
Antimicrobial additive in plastics
Textile and fiber antimicrobial treatment
Industrial water biocide
Personal care product preservative
Biofouling inhibitor in industrial systems

From first email to approved supply

01

Send your RFQ

Share your application, quantity, destination and current grade.

02

Review the documents

Review the producer TDS, a recent COA and SDS with the quotation.

03

Trial a sample

Run your own tests against your current grade.

04

Lock the spec

Put approved lot limits into the contract and check every COA against them.

Tell us your requirement. We match the grade.

Share your application, required quantity and destination.

Email david@sunchemgroup.com

Discuss your Sodium pyrithione (SPT) requirements

Contact
magnifier