Industrial Antiseptic Agent Preservative Chemical
Sodium Pyrithione SPT 40% CAS 3811-73-2
Product Name: Sodium Pyrithione
CAS No.: 3811-73-2
Molecular Formula: C5H4NOSNa
EINECS: 223-296-5
Molecular Weight: 149.16
Acid-Base Property: Neutral Surface Disposal Agent
Appearance: Usually a pale yellow liquid or off-white powder (specific form may vary depending on purity and manufacturing process)
Purity Specification: 40% (higher purity products such as 98% are also available)
Solubility: Easily soluble in water, also soluble in organic solvents such as ethanol
Storage：Keep in cool & dry place, stay away from strong light and heat
Sodium Pyrithione Basic Information
| Chemical Name | Sodium Pyrithione/SPT | CAS No. | 3811-73-2 |
| MF | C5H6NNaOS | MW: | 151.16 |
| EINECS | 223-296-5 | ||
| Melting point | -25 °C | Boiling Point | 109 °C |
| Density | 1.22 | Appearance | Liquid |
| Color | Light yellow | Water solubility | 54.7 g/100 mL |
Sodium Pyrithione Application
1. Personal Care Products:
* Widely used in shampoos, conditioners, and other wash-off products, providing dandruff removal, anti-itch, anti-mold, and antibacterial effects.
* As a preservative, it prevents product deterioration and mold growth, extending shelf life.
2. Industrial Applications:
* Building Coatings: Used as a mold inhibitor to prevent mold growth during storage and use.
* Adhesives and Sealants: Prevents microbial growth and improves product stability.
* Metalworking Fluids: Prevents bacterial growth and protects metal surfaces.
* Textiles and Leather Products: Used as a mold inhibitor to protect products from mold.
3. Agricultural Applications:
* As an effective fungicide for fruit trees, peanuts, wheat, vegetables, and other crops.
* Also an excellent disinfectant for silkworms.
4. Other Applications:
* Can be used to formulate disinfectants, detergents, and broad-spectrum antifungal dermatological medications.
Sodium Pyrithione Function
1. Broad-spectrum antimicrobial properties: Sodium pyrithione shows good inhibition effect on a variety of moulds and bacteria. It can inhibit or kill moulds such as Aspergillus niger, Aspergillus flavus, Aspergillus variegatus, Penicillium oryzae, Penicillium wansii, green wood mould, Trichoderma globosum, Rhizopus wansii and other moulds, as well as bacteria such as Escherichia coli, Staphylococcus aureus, Bacillus oryzae, Bacillus megaterium, Pseudomonas fluorescens and other bacteria. In addition, it can inhibit a variety of yeasts, such as alcoholic yeast, brewer’s yeast and so on.
2. Daily chemical products: In shampoo shampoo and hair care products, sodium pyrithione not only helps to prevent the product from rotting and mould, but also effectively stops itching and removes dandruff, and is an important ingredient in many high-end shampoo and hair care products.
3. Architectural coatings, adhesives, sealants: in these fields, the anti-mould and anti-bacterial properties of sodium pyrithione help to extend the service life of the products and prevent the growth of moulds and bacteria.
4. Pesticides: As an effective fungicide, Sodium Pyrithione can be used in the control of pests and diseases of fruit trees, peanuts, wheat, vegetables and other crops, and it is also an excellent disinfectant for silkworms.
5. Textiles, leather products: In the production and storage of textiles and leather products, sodium pyrithione can prevent the growth of moulds and bacteria and protect the quality and appearance of the products.
6. Metal working fluids: In the field of metal cutting fluids, antirust fluids, etc., sodium pyrithione can prevent corrosion and mould growth on metal surfaces.
