Zinc acetate
CAS 557-34-6
EC 209-170-2
Formula C2H4O2.1/2Zn
MW 183.48 g/mol
Salts & Minerals Personal Care & CosmeticsPharmaceuticals & HealthcarePlastics & PolymersFood & Nutrition Preservation & BiocideCatalysispH Regulation & Buffering
Description
Zinc acetate (CAS 557-34-6) is an inorganic zinc salt commonly abbreviated as Zn(OAc)2 or Zn(II)Ac2. It carries no E-code designation and is not classified as a food additive, though it appears in pharmaceutical and cosmetic formulations under various registry identifiers including ai3-04465.
In pharmaceutical topical formulations, zinc acetate acts as an antimicrobial by releasing zinc ions that disrupt microbial membrane integrity. In polymer production, it functions as a catalyst for transesterification and polycondensation reactions. Personal care formulators use it as a pH buffer and skin-conditioning agent in products such as acne treatments and mouthwashes.
Zinc acetate is available in pharmaceutical-grade (Ph.Eur. compliant) and technical-grade forms, supplied as a white crystalline powder. It falls under HS code 29152990 and is subject to REACH registration requirements within the EU. Standard packaging includes 25 kg bags and fiber drums, with FCC-grade material available for healthcare-adjacent applications.
In pharmaceutical topical formulations, zinc acetate acts as an antimicrobial by releasing zinc ions that disrupt microbial membrane integrity. In polymer production, it functions as a catalyst for transesterification and polycondensation reactions. Personal care formulators use it as a pH buffer and skin-conditioning agent in products such as acne treatments and mouthwashes.
Zinc acetate is available in pharmaceutical-grade (Ph.Eur. compliant) and technical-grade forms, supplied as a white crystalline powder. It falls under HS code 29152990 and is subject to REACH registration requirements within the EU. Standard packaging includes 25 kg bags and fiber drums, with FCC-grade material available for healthcare-adjacent applications.
Physical Properties
| Melting Point | 237 °C (decomp) |
| Boiling Point | 908°C |
| Density | 1.735 g/cm³ |
| Flash Point | 12 °C |
| Appearance | White crystalline powder |
| Color | Yellow to brown to gray-green |
| Form | Powder |
| Water Solubility | Soluble in water, alcohol, dilute mineral acids and alkalies. |
| Vapor Pressure | 0.001Pa at 25℃ |
| Log P | -1.28 |
Safety & Handling (Learn More)
Danger GHS05 GHS07 GHS09
H
H302H318H319H400H410H411
P
P264P270P273P280P317P330P391P501P264+P265P301+P317P337+P317P305+P351+P338P305+P354+P338
Trade & Regulatory
| HS Code | 29152990 |
| UN Number | 3077 |
| ADR Class | 9 |
| Packing Group | III |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 3 |
Other Names
Zn(OAc)2Zn(II)Ac2Galzinsiltexcl4ai3-04465Siltex CL 4
Related Products
Raw Materials
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