Sodium Pyrithione (CAS NO.:3811-73-2)

Alias: Sodium-2-pyridinethiol-1-oxide

General Description: Sodium Pyrithione is an aqueous solution of sodium 2-pyridinethiol–1–oxide.  It is registered by the U.S. EPA under the Federal Insecticide, Fungicide, and Rodenticide Act and supported in Europe under the Biocidal Products Directive. Molecular formula:C5H4NOSNa

Molecular weight:149.16

SPT Structural formula:                                        

CAS NO.:3811-73-2

Hazardous class : 9

HS :2933399090


Solubility: easily soluble in water and ethanol etc.

Microelement: customerized supplyStability: 2 years, avoid light

Storage: In cool place, avoid sunlight


SPT specs:


(1) Sodium Pyrithione (SPT)

Industrial Grade (liquid)Spec.

APPEARANCE :Pale amber liquid and free of sediment

ASSAY ≥40%

PH(5%solution): 8.5-10.5

REFRACTIVE INDEX  :1.4770-1.4870


(2) Pharmaceutical Grade (solid)

sodium pyrithione (medical grade)

APPEARANCE Almost white powder

ASSAY(dry base) 98%min

lost on drying≤5%

PH(5%solution)    8.0-9.0


Packaging :

(1) Industrial Grade (liquid):250kg net in each blue  square plastic drum or 25 kg net each plastic drum , 20MT /20’FCL.

Packing:1.3MT net in each IBC  drum , 25MT max /20’FCL(21.6MT)

(2) Pharmaceutical Grade (solid):25KG net each cardboard drum,IF with pallet,5MT /20’FCL;If without pallet, 8MT /20’FCL


Payment : T/T in advance or L/C sight

Lead time : 10 working days

Validity: 15 days.


Application of SPT:

metalworking fluids, architectural paints, aqueous emulsion systems; textiles, plastics, flooring, wallboard and various construction products such as adhesives, caulks, components of insulation, flooring, etc


It is also an effective germicide  in fruit tree, peanut, vegetable and cereals. Due to its good performance of  efficiency ,eco-friendly, low poison and broad spectrum, SPT and the like products  have shown a great market potential  in a wide range of applications.


Advantages.Sodium Pyrithione is a non-VOC, broad spectrum, highly effective antimicrobial agent. It is used to control mold, mildew, fungi, yeasts, algae, and both gram (+) and gram (-) bacteria.  Sodium Pyrithione also has excellent heat and pH stability.

Safety.Concentrated Sodium Pyrithione may be harmful if ingested, inhaled, or in contact with the skin as absorption can occur; however, diluted at recommended use levels, it is considered non-toxi


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