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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 61372Generated: October 27, 2026

Cobalt(II) acetate tetrahydrate

Cobalt diacetate · COBALTOUS ACETATE TETRAHYDRATE · ACETIC ACID COBALT (II) SALT TETRAHYDRATE · COBALT ACETAT · CobaltAcetateAr · octankobaltnaty · ANTI-MOUSE LAMP-1 · ANTI-MOUSE CD107A

https://huagongshe.com/en/chemical/61372

Cobalt(II) acetate tetrahydrate molecular structure

Identifiers & Physical Properties

CAS No.6147-53-1
Molecular formulaC4H6CoO4.4H2O
Average molar mass249.08 g/mol
Monoisotopic mass249.00206241 g/mol
SMILESCC(=O)[O-].CC(=O)[O-].O.O.O.O.[Co+2]
InChIKeyZBYYWKJVSFHYJL-UHFFFAOYSA-L
PubChem CID61372
EC No.612-153-6
DTXSIDDTXSID80210423

Chemical & Physical Properties

Topological polar surface area84.3
Hydrogen bond donors4
Hydrogen bond acceptors8
Rotatable bonds0
Heavy atoms13
Formal charge0
Complexity25.5
Chemical classesMetals -> Organic Acids, Metal Salts
Density1.7 g/cm³1,71 g/cm3
SolubilitySolubility in water, g/100ml at 25 °C: (very good)348g/l380 g/L (20 ºC)
Melting point140 °C
Physical DescriptionDry PowderIntense red solid[Merck Index] Violet crystals, soluble in water[MSDSonline] Delliquescent[Ullmann]RED CRYSTALS.
Bulk density850kg/m3
Refractive index1.542
Storage conditionsStore at +5°C to +30°C.
Physical stateSolid
ColorRed
Specific gravity1.71
OdorAcetic acid odour
PH Range6.8
pH7.2 (50g/l, H2O, 20℃)
SensitivityHygroscopic
Merck14,2433
BRN3731397
StabilityStable. Avoid moisture, heat.
InChI1S/2C2H4O2.Co.4H2O/c2*1-2(3)4/h2*1H3,(H,3,4)4*1H2/q+2/p-2
InChIKeyZBYYWKJVSFHYJL-UHFFFAOYSA-L
SMILES[H]O[H].[H]O[H].[H]O[H].[H]O[H].CC(=O)O[Co]OC(C)=O
CAS DataBase Reference6147-53-1(CAS DataBase Reference)
FDA UNII7648Z91O1N
EPA Substance Registry SystemCobalt acetate tetrahydrate (6147-53-1)
UNSPSC Code12352300
NACRESNB.24
GHS pictogramGHS07,GHS08,GHS09
Signal wordDanger
GHS hazard statementsH302-H317-H319-H334-H341-H350i-H360F-H410
GHS precautionary statementsP273-P280-P301+P312-P302+P352-P305+P351+P338-P308+P313
Hazard symbolsXn,N,T
Risk statements (R)22-38-40-43-53-50/53-42/43-36/37/38-20/21/22-68-60-49
Safety statements (S)36/37-61-45-29-24-22-37/39-36/37/39-26-60-53
UN transport number3077
Water hazard class (WGK)2
RTECS numberAG3325000
TSCA inventory statusNo
Hazard class9Acute Tox. 4 OralAquatic Acute 1Aquatic Chronic 1Carc. 1B InhalationEye Irrit. 2Muta. 2Repr. 1BResp. Sens. 1Skin Sens. 1
Packing groupIII
Customs code29152300
Storage class6.1C - Combustible acute toxic Cat.3toxic compounds or compounds which causing chronic effects

Safety & Regulations

GHS classificationDangerH317 (100%): May cause an allergic skin reaction [Warning Sensitization, Skin]P203, P233, P260, P261, P271, P272, P273, P280, P284, P302+P352, P304+P340, P318, P321, P333+P317, P342+P316, P362+P364, P391, P403, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 2209 reports by companies from 11 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.H350: May cause cancer [Danger Carcinogenicity]
Regulatory informationChemical: Acetic acid, cobalt(2+) salt, tetrahydrateRegulation (EC) No 1831/2003 (amended)Acetic acid, cobalt(2+) salt, hydrate (2:1:2) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Acetic acid, cobalt(2+) salt, hydrate (2:1:2) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)Cobalt (II) acetate tetrahydrate: Does not have an individual approval but may be used under an appropriate group standard
Other safety informationIMAP assessments - Soluble cobalt (II) and salts: Human health tier II assessment
Fire hazardsNot combustible. Gives off irritating or toxic fumes (or gases) in a fire.
Hazards summaryA skin, eye, and respiratory tract irritantMay cause skin sensitization[ICSC] Harmful if swallowedMay cause skin and respiratory tract sensitization[MSDSonline] See Cobalt.
Chemical DangersDecomposes on heating. This produces irritating fumes. Reacts with strong oxidants. This generates fire and explosion hazard.
Packaging and LabellingDo not transport with food and feedstuffs.
Hazard Classes and CategoriesSkin Sens. 1 (100%)Acute toxicity - category 4Acute toxicity (Oral) - Category 4Carcinogenicity - Category 1B
Fire fightingIn case of fire in the surroundings, use appropriate extinguishing media.
First aid measuresFresh air, rest. Refer for medical attention.Remove contaminated clothes. Rinse skin with plenty of water or shower. Seek medical attention if you feel unwell.First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.Rinse mouth. Give one or two glasses of water to drink. Refer for medical attention .
Safe storageSeparated from strong oxidants. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing.
Exposure control and personal protectionBiological Exposure Indices (BEI) [ACGIH] - Cobalt in urine = 15 ug/Lsample at end of shift at end of workweek
Spillage disposalPersonal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Then store and dispose of according to local regulations.
Eye PreventionWear safety goggles or eye protection in combination with breathing protection.
Inhalation RiskA harmful concentration of airborne particles can be reached quickly when dispersed, especially if powdered.
Skin PreventionProtective gloves. Protective clothing.
Exposure PreventionPREVENT DISPERSION OF DUST! AVOID ALL CONTACT!
Ingestion PreventionDo not eat, drink, or smoke during work. Wash hands before eating.
Inhalation PreventionUse local exhaust or breathing protection.
Threshold Limit Values (TLV)0.02 [mg/m3], as Co
Adverse effectsSkin Sensitizer - An agent that can induce an allergic reaction in the skin.
Exposure routesThe substance can be absorbed into the body by inhalation and by ingestion.
Signs and SymptomsCough. Shortness of breath. Sore throat.Redness.Redness. Pain.Abdominal pain. Nausea. Vomiting.
ICSC Environmental DataBioaccumulation of this chemical may occur in seafood.
Water hazard class (WGK)2
TSCA inventory statusNo
RTECS numberAG3325000
UN transport number3077
Customs code29152300
Risk statements (R)22-38-40-43-53-50/53-42/43-36/37/38-20/21/22-68-60-49
Signal wordDanger
GHS pictogramGHS07,GHS08,GHS09
Hazard symbolsXn,N,T
Safety statements (S)36/37-61-45-29-24-22-37/39-36/37/39-26-60-53
Hazard class9Acute Tox. 4 OralAquatic Acute 1Aquatic Chronic 1Carc. 1B InhalationEye Irrit. 2Muta. 2Repr. 1BResp. Sens. 1Skin Sens. 1
Storage class6.1C - Combustible acute toxic Cat.3toxic compounds or compounds which causing chronic effects
Packing groupIII
GHS hazard statementsH302-H317-H319-H334-H341-H350i-H360F-H410
GHS precautionary statementsP273-P280-P301+P312-P302+P352-P305+P351+P338-P308+P313

Applications & Uses

Uses

Cobalt(II) acetate tetrahydrate is used as an industrial catalyst to harden paints and varnishes, an active catalyst for oxidation and esterification reactions. It is also used to prepare metal complexes having unusual coordination geometry.

Uses

Cobalt(II) acetate tetrahydrate may be used in the preparation of [Co3(OH)2(H2O)2(aptet)4] (aptet = 4-aminophenyltetrazolate) and new tetradentate cobalt(II)-Schiff base complex.

Uses

Cobalt(II) acetate tetrahydrate is used to prepare complexes for examination of the properties of metals with unusual coordination geometries. used as a catalyst for oxidation and esterification. used as an industrial catalyst to harden paints and varnishes, an active catalyst for oxidation and esterification reactions.

General Description

Cobalt(II) acetate tetrahydrate has an octahedral structure, the central cobalt orbit is coordinated by four water molecules and two acetate ligands. Cobalt(II) acetate tetrahydrate becomes anhydrous by 140oC.