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Zinc acetate

CAS No.
557-34-6
Chemical Name:
Zinc acetate
Synonyms
Zn(OAc)2;Zinc diacetate;Acetic acid, zinc(II) salt;Galzin;Diacetoxyzinc;Acetic acid zinc salt;NA-9153;ai3-04465;siltexcl4;ZINC ACETATE
CBNumber:
CB8108591
Molecular Formula:
C4H6O4Zn
Molecular Weight:
183.48
MDL Number:
MFCD00012454
MOL File:
557-34-6.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-08-20 20:20:01

Zinc acetate Properties

Melting point 83-86 °C
Boiling point 908°C
Density 1.84 g/mL at 25 °C (lit.)
vapor pressure 0.001Pa at 25℃
Flash point 12 °C
storage temp. Inert atmosphere,Room Temperature
solubility Methanol (Slightly), Water (Slightly)
pka 4.756[at 20 ℃]
form Powder
color Yellow to brown to gray-green
Specific Gravity 1.84
Water Solubility Soluble in water, alcohol, dilute mineral acids and alkalies.
Sensitive Hygroscopic
Merck 14,10128
Cosmetics Ingredients Functions ORAL CARE
ANTIMICROBIAL
SKIN PROTECTING
ASTRINGENT
InChI 1S/2C2H4O2.Zn/c2*1-2(3)4;/h2*1H3,(H,3,4);/q;;+2/p-2
InChIKey DJWUNCQRNNEAKC-UHFFFAOYSA-L
SMILES CC(O[Zn]OC(C)=O)=O
LogP -1.28
CAS DataBase Reference 557-34-6(CAS DataBase Reference)
SCOGS (Select Committee on GRAS Substances) Zinc acetate
Substances Added to Food (formerly EAFUS) ZINC ACETATE
FDA 21 CFR 175.105
EWG's Food Scores 3-4
FDA UNII H2ZEY72PME
ATC code A16AX05
NIST Chemistry Reference Zinc acetate(557-34-6)
EPA Substance Registry System Zinc acetate (557-34-6)
UNSPSC Code 12352103
NACRES NA.82

SAFETY

Risk and Safety Statements

Symbol(GHS)  Corrosion (GHS05)Exclamation Mark (GHS07)Environment (GHS09)
GHS05,GHS07,GHS09
Signal word  Danger
Hazard statements  H302-H318-H411
Precautionary statements  P264-P270-P273-P280-P301+P312-P305+P351+P338
PPE dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes  Xn,N,Xi,F
Risk Statements  36-50/53-22-11
Safety Statements  26-60-61-39-16-7
RIDADR  UN 3077 9/PG 3
WGK Germany  3
RTECS  AK1500000
TSCA  TSCA listed
HazardClass  9
HS Code  29152990
Storage Class 11 - Combustible Solids
Hazard Classifications Acute Tox. 4 Oral
Aquatic Chronic 2
Eye Dam. 1
Hazardous Substances Data 557-34-6(Hazardous Substances Data)
REACH Registrations Active
NFPA 704
1
3 1

Zinc acetate price More Price(57)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 383317 Zinc acetate 99.99% trace metals basis 557-34-6 25g $119 2026-04-30 Buy
Sigma-Aldrich 383317 Zinc acetate 99.99% trace metals basis 557-34-6 100g $401 2026-04-30 Buy
Usbiological 242939 Zinc Acetate 99.9+% ≥99.9%(Assay) 557-34-6 25g $383 2026-06-03 Buy
Usbiological 242939 Zinc Acetate 99.9+% ≥99.9%(Assay) 557-34-6 100g $639 2026-06-03 Buy
Usbiological 242939 Zinc Acetate 99.9+% ≥99.9%(Assay) 557-34-6 250g $960 2026-06-03 Buy
Product number Packaging Price Buy
383317 25g $119 Buy
383317 100g $401 Buy
242939 25g $383 Buy
242939 100g $639 Buy
242939 250g $960 Buy

Zinc acetate Chemical Properties, Uses, Production

Description

Zinc acetate (chemical formula: Zn(O2CCH3)2) is a kind of salt commonly existing in the dihydrate form. It appears as colorless solid. It is produced through the reaction between zinc oxide with acetate acid. Given that zinc is an essential element for growth and development of human body, zinc acetate can be used as a dietary supplement for the treatment of zinc deficiency. It plays an important role for the synthesis of cholesterol, protein, and fats. It can also be used as an astringent, styptic and emetic. In industry, it has various kinds of applications including wood preservation, manufacturing of other zinc salts as well as ethylene acetate, being used as a dye mordant, and analytical reagent.

Chemical Properties

Zinc acetate occurs as white crystalline, lustrous plates with a faint acetic odor and an astringent taste.

Physical properties

The acetate group is capable of binding to metal ions in a variety of ways through its two oxygen atoms and several connectivities are observed for the various hydrates of zinc acetate. Anhydrous zinc acetate adopts a polymeric structure consisting of zinc coordinated to four oxygen atoms in a tetrahedral environment, each tetrahedron being connected to neighbors by the acetate groups . The acetate ligands are not bidentate. In contrast, most metal diacetates feature metals in octahedral coordination with bidentate acetate groups. In zinc acetate dihydrate the zinc is octahedral, wherein both acetate groups are bidentate.
2 - 5 - Heating pad
Heating Zn(CH3CO2)2 in a vacuum results in loss of acetic anhydride, leaving a residue of ""basic zinc acetate,"" with the formula Zn4O(CH3CO2)6. This cluster compound has the tetrahedral structure shown below. This species closely resembles the corresponding beryllium compound, although it is slightly expanded with Zn-O distances ~1.97 vs ~1.63 Å for Be4O(OAc)6.

Uses

Zinc acetate anhydrous is used in the synthesis of layered Zn-arylphosphonates with potential application in sorption, ion exchange or catalysis. It is utilized in the ultrasonic preparation of zinc sulfide nanoparticles coated on silica particles. It is administered orally or parenterally as a nutritional supplement. It finds an application in the field of industries such as wood preservation, manufacturing other zinc salts, polymers, manufacture of ethylene acetate, as a dye mordant, and analytical reagent. It also acts as a plating inhibitor on primary water piping.

Preparation

Zinc acetate is prepared by the reaction of acetic acid with zinc oxide followed by crystallization (crystals of dihydrate obtained): ZnO + 2CH3COOH → (CH3COO)2Zn + H2O.

Production Methods

Zinc acetate is synthesized by reacting zinc oxide with glacial acetic acid, with subsequent crystallization, separation by centrifugation, and drying and milling of the crystals. No organic solvents are used during the synthesis.

Definition

ChEBI: Zinc acetate is an acetate salt in which the cationic component is zinc(2+). It has a role as an astringent. It is a zinc molecular entity and an acetate salt.

Application

Dietary and medicinal applications
Zinc acetate is used as a dietary supplement and in lozenges used to treat the common cold. Zinc acetate alone is thought to be a more effective treatment than zinc gluconate. Zinc acetate can also be used to treat zinc deficiencies. As an oral daily supplement it is used to inhibit the body's absorption of copper as part of the treatment for Wilson's disease. Zinc acetate is also sold as an astringent in the form of an ointment, a topical lotion; or combined with an antibiotic such as erythromycin for the topical treatment of acne. Furthermore Zinc acetate is commonly sold as a topical anti-itch ointment.
Industrial applications
Industrial applications include wood preserving, manufacturing other zinc salts, polymers, manufacture of ethylene acetate, as a dye mordant, and analytical reagent. Zinc acetate is a precursor via a sol-gel route to the transparent semi conductor zinc oxide. Zinc acetate is also used for manufacturing glazers for painting on porcelain; as a reagent in testing for albumin, tannin, phosphate; as cross-linking agents for polymers; in tobacco smoke filters; and as a topical fungicide.

Flammability and Explosibility

Non flammable

reaction suitability

core: zinc
reagent type: catalyst

Pharmaceutical Applications

Zinc acetate has been used as an excipient in a variety of pharmaceutical formulations including topical gels, lotions, and solutions, and subcutaneous injections. It has also been investigated for use in an oral controlled-release formulation for water-soluble drugs in combination with sodium alginate and xanthan gum.
Therapeutically, zinc acetate has been used in oral capsules for the treatment of Wilson’s disease. Zinc acetate has also been demonstrated to be effective as a spermicide in vaginal contraceptives.

Materials Uses

A novel formulation film based on zinc acetate and cellulose has been prepared. Hydroxyl ethyl cellulose (HEC) and Polyvinyl alcohol have mixed to form homogenous solution then zinc acetate with different ratios has been added. Research showed that Zinc/cellulose 1.5 films was superior in promoting burn wound healing via mechanisms possibly associated with its anti-inflammatory, anti-apoptotic, angiogenesis, and remodeling abilities[1].

Safety

Zinc acetate is used in topical pharmaceutical formulations and subcutaneous injections, where it is generally regarded as relatively nontoxic and nonirritant when used as an excipient. However, zinc acetate is poisonous by intravenous and intraperitoneal routes; it is also moderately toxic following oral consumption.
Zinc acetate:
LD50 (rat, oral): 2.510 g/kg
LD50 (mouse, IP): 0.057 g/kg

Veterinary Drugs and Treatments

Zinc sulfate is used systemically as a nutritional supplement in a variety of species. Oral zinc acetate has been shown to reduce copper toxicity in susceptible dog breeds (Bedlington Terriers, West Highland White Terriers) with hepatic copper toxicosis. Zinc therapy may also be of benefit in the treatment of hepatic fibrosis in the dog. Zinc sulfate is used topically as an astringent and as a weak antiseptic both for dermatologic and ophthalmic conditions.

storage

Zinc acetate loses water of hydration above 101℃. Zinc acetate should be stored in an airtight container in a cool, dry, place.

Incompatibilities

Zinc acetate is incompatible with oxidizing agents, zinc salts, alkalis and their carbonates, oxalates, phosphates, and sulfides.

Regulatory Status

Included in the FDA Inactive Ingredients Database (SC injections; topical lotions and solutions). Included in medicines licensed in the UK.

References

[1] Salah, R. S., Elsayed, G. H., El-Hussieny, M., Mousa, M. R., & Dacrory, S. (2026). Formulation film based on zinc acetate/cellulose with anti-inflammatory, angiogenesis, and remodeling abilities for enhancing burn healing. Scientific Reports, 699. https://doi.org/10.1038/s41598-025-27021-w

References

https://en.wikipedia.org/wiki/Zinc_acetate
https://pubchem.ncbi.nlm.nih.gov/compound/Zinc_acetate_dihydrate#section=GHS-Classification

5970-45-6
64-19-7
557-34-6
Synthesis of Zinc acetate from Zinc acetate dihydrate and Acetic acid
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Accela ChemBio Co.,Ltd. 021-50795510 4000665055 marketing@accelachem.com China 10972 64
Shanghai Hanhong Scientific Co.,Ltd. 021-54306202 13764082696 info@hanhongsci.com China 42917 64

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