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  • SPT40 (Sodium Pyrithione 40%) CAS 3811-73-2
  • SPT40 (Sodium Pyrithione 40%) CAS 3811-73-2
  • SPT40 (Sodium Pyrithione 40%) CAS 3811-73-2
  • SPT40 (Sodium Pyrithione 40%) CAS 3811-73-2
  • SPT40 (Sodium Pyrithione 40%) CAS 3811-73-2
SPT40 (Sodium Pyrithione 40%) CAS 3811-73-2 SPT40 (Sodium Pyrithione 40%) CAS 3811-73-2 SPT40 (Sodium Pyrithione 40%) CAS 3811-73-2 SPT40 (Sodium Pyrithione 40%) CAS 3811-73-2 SPT40 (Sodium Pyrithione 40%) CAS 3811-73-2

SPT40 (Sodium Pyrithione 40%) CAS 3811-73-2

  • CAS 3811-73-2
  • Purity:99% powder; 40% liquid
  • Water-soluble industrial mildew preservative
  • Packing 25kg drum
  • Product description: Sodium pyrithione is currently the most effective water-soluble industrial mildew preservative, with high efficiency, broad spectrum, low toxicity and stability. It can be used in metal cutting fluid,

Sodium Pyrithione (SPT 40% Solution)

Cosmetic anti-dandruff shampoo raw material Sodium SPT-40 solution

Product Name: Sodium Pyrithione (SPT)

CAS: 3811-73-2

EINECS: 223-296-5

Molecular formula: C5H5NNaOS

Molecular weight: 149.16

Specification: Industrial Grade, 40% solution




Yellow or light yellow brown transparent liquid



PH Value


Specific Gravity



Easily soluble in organic solvents such as water and ethanol


① Acute oral LD50 in mice> 1000mg / kg

② Non-irritating to the skin

Experiment of “3-genesis” is negative.

Antiseptic and mould proofing effects:

This product can restrain and sterilize eight moulds, including black mold,aspergillus flavus, aspergillus versicolor,penicillium citrinum, paecilomium varioti bainier,trichoderma viride,chaetomium globasum and cladosporium herbarum; five bacteria, such as E.coli, staphylococcus aureus, bacillus subtilis,bacillus megaterium and pseudomonas fluorescence as well as two yeast fungi which are distillery yeast and bakers’ yeast. Its MIC to various micro-organisms is as follows:

Microbial name


Microbial name


Aspergillus niger


Bacillus subtilis


Aspergillus flavus


MAO spherical shell mould


Aspergillus discoloration


Bacillus megaterium


Penicillium citrinum


E. coli


Paecilomyces tenuii


Pseudomonas fluorescens


Cladosporium spp


Staphylococcus aureus


Trichoderma viride


Beer Yeast


Alcoholic yeast



SPT is currently the most effective water-soluble industrial mildew preservative.

Widely used in the fields of daily chemicals (shampoo and hair care products),  latex paint, adhesive, leather products, textile,architectural coatings, adhesives, sealants, pesticides,  metalworking fluids,anti-rust liquidetc etc.

It can also formulate products such as disinfectants, astringents and medical broad-spectrum antifungal dermatology drugs. At the same time, it is an effective fungicide for fruit trees, peanuts, wheat, vegetables and other crops and an excellent disinfectant for silkworm. SPT and its similar products are widely used in related fields for their high efficiency, broad spectrum, and low toxicity.Precautions

1. Although this product is low-toxic and safe to use, it should still avoid contact with mouth, eyes and skin. Please take good precautions during operation.

2. Store in a cool place away from light.

3. This product is packed in plastic drum (liquid), 25kg or 250kg.

Package: 25kg drum

Transport Mode:

Multipletransportation methods can be selected, Sea Transport, Air Transport, Express Transport and Railway Transport. The transport method will be done according to customers' request. Our priciple is to delivery the goods reached to customers with shortest time and ecomomic transport mode, safe and fast.

Quality Testing Center:

We have strict requirements on product quality, In order to control the quality of our products, the production department performs product quality inspection on each batch of cargo produced with advanced equipment for testing and manufacturing. Before our new customer places an order, we can send the sample for your testing. We ensure the quality is the same as bulk quality.

Our service

With more ten years experience in industrial biocide, preservatives and mold inhibitor, We provide comprehensive customer service from the initial consultation to the final delivery of your order. We always serves with enthusiasm and accepts full responsibility in customers' work.
We have own specialized quality control center, to improve the goods quality. Our professional R & D team will provide continuous technical service support to our customer. With the long-term cooperation with customers from all over the world, we have opened up new business scopes. We always adhere to customer-centricity, focus on product quality, respond quickly to customer needs, and provide customers with stable and reliable products.