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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 6327770Generated: October 31, 2026

Zinc pyrithione

ZPT · Pyrithione zinc · ZNPT · 1-HYDROXYPYRIDINE-2-THIONE ZINC · Bis[[(pyridine 1-oxide)-2-yl]thio] zinc salt · zincomadine · 2-MERCAPTOPYRIDINE N-OXIDE ZINC SALT · 1-HYDROXYPYRIDINE-2-THIONE ZINC SALT

https://huagongshe.com/en/chemical/6327770

Zinc pyrithione molecular structure

Identifiers & Physical Properties

CAS No.13463-41-7
Molecular formulaC10H8N2O2S2Zn
Average molar mass317.71 g/mol
SMILESO[N+]1=CC=CCC1=S.On1ccccc1=S.[Zn]
PubChem CID6327770

Chemical & Physical Properties

Melting pointapproximate 240℃
Density1.782 g/cm3(Temp: 25 °C)
Vapor pressure0Pa at 25℃
Storage conditionsSealed in dry,Room Temperature
Solubilityalmost transparency in PyridineInsoluble (<0.1 g/100 mL at 21 ºC)
Physical statePowder
ColorWhite to Orange to Green
OdorMild Characteristic
Merck14,7994
Cosmetics Ingredients FunctionsPRESERVATIVEHAIR CONDITIONINGANTI-SEBORRHEICANTI-SEBUM
InChIInChI=1S/2C5H5NOS.Zn/c2*7-6-4-2-1-3-5(6)8/h2*1-4,8H/q+2/p-2
InChIKeyOTPSWLRZXRHDNX-UHFFFAOYSA-L
SMILESC1(C=CC=C[N+]=1[O-])S[Zn]SC1C=CC=C[N+]=1[O-]
LogP (partition coefficient)0.9 at 25℃ and pH7.5-7.7
Surface tension73mN/m at 7.22mg/L and 20℃
CAS DataBase Reference13463-41-7(CAS DataBase Reference)
EWG's Food Scores2-3
FDA UNIIR953O2RHZ5
ATC codeD11AX12
EPA Substance Registry SystemZinc pyrithione (13463-41-7)
UNSPSC Code41116107
NACRESNA.24
GHS pictogramGHS05,GHS06,GHS08,GHS09
Signal wordDanger
GHS hazard statementsH301-H318-H330-H360D-H372-H410
GHS precautionary statementsP202-P260-P273-P280-P304+P340+P310-P305+P351+P338
Personal protective equipment (PPE)Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
Hazard symbolsT+,N,T
Risk statements (R)24/25-26-37/38-41-50/53-23-22
Safety statements (S)26-28-36/37/39-45-61-60-39
UN transport numberUN 2811 6.1/PG 2
Water hazard class (WGK)3
RTECS numberZH0950000
TSCA inventory statusTSCA listed
Hazard class6.1(b)Acute Tox. 2 InhalationAcute Tox. 3 OralAquatic Acute 1Aquatic Chronic 1Eye Dam. 1Repr. 1BSTOT RE 1
Packing groupIII
Customs code29333990
Storage class6.1A - Combustible acute toxic Cat. 1 and 2very toxic hazardous materials
Hazardous substances data13463-41-7(Hazardous Substances Data)
ToxicityLD50 oral in rat: 177mg/kg
REACH registrationsActive

Safety & Regulations

Personal protective equipment (PPE)Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
Water hazard class (WGK)3
TSCA inventory statusTSCA listed
RTECS numberZH0950000
UN transport numberUN 2811 6.1/PG 2
Customs code29333990
ToxicityLD50 oral in rat: 177mg/kg
Risk statements (R)24/25-26-37/38-41-50/53-23-22
Signal wordDanger
GHS pictogramGHS05,GHS06,GHS08,GHS09
Hazard symbolsT+,N,T
Safety statements (S)26-28-36/37/39-45-61-60-39
Hazard class6.1(b)Acute Tox. 2 InhalationAcute Tox. 3 OralAquatic Acute 1Aquatic Chronic 1Eye Dam. 1Repr. 1BSTOT RE 1
Storage class6.1A - Combustible acute toxic Cat. 1 and 2very toxic hazardous materials
Packing groupIII
GHS hazard statementsH301-H318-H330-H360D-H372-H410
REACH registrationsActive
GHS precautionary statementsP202-P260-P273-P280-P304+P340+P310-P305+P351+P338
Hazardous substances data13463-41-7(Hazardous Substances Data)

Applications & Uses

Uses

Shampoo for dandruff,zinc pyrithione can inhibit Gram positive and negative bacteria and mold growth,Care hair Effectively , delay hair aging ,control white hair and hair loss generation. zinc pyrithion is also used as a cosmetic preservative, oil, paint biocide. Zinc pyrithione has a strong killing power on fungi and bacteria so that it can effectively kill dandruff fungus,playing a role in dandruff .

Description

Zinc pyrithione is a coordination complex of zinc and pyrithione that has antimicrobial and anticancer activities. It is active against the bacteria E. coli, S. aureus, K. pneumoniae, A. baumannii, P. aeruginosa, E. faecium, E. faecalis, and E. cloacae (MICs = 1-4 μg/ml) and the fungus P. ovale when used at concentrations ranging from 0.01 to 10 μg/ml. Zinc pyrithione reduces tumor growth in an SCC-4 mouse xenograft model when administered at a dose of 1 mg/kg per week for six weeks. Formulations containing zinc pyrithione have been used in the treatment of dandruff.

Uses

zinc pyrithione is a preservative against bacteria, fungi, and yeast. It is unstable in light and in the presence of oxidizing agents. Zinc pyrithione is useful in gels, creams, heavy lotions, and talcum powder.

Uses

Reactions may lead to photosensitive eczema and actinic reticuloid syndrome. Zinc pyrithione is used as antifungal, antibacterial and antiseborrheic agent used in many shampoos and hair creams.

Uses

Zinc pyrithione is directly cytotoxic and has antimicrobial effects. Zinc pyrithione is found in many shampoos (DHS-Zinc, Head and Shoulders) and should be applied for 5 minutes daily for 2 weeks. Zinc pyrithione is the active ingredient in several shampoos used to control dandruff and seborrheic dermatitis and is also effective in the therapy of tinea versicolor. It remains unclear whether the beneficial effects are caused by an antiproliferative or antimicrobial effect or both. It is substantive to the hair, allowing continued therapeutic effect after washing.

General Description

Fine beige granules.