Manganese Acetate, Anhydrous
Manganese Acetate, Anhydrous
Mg(CH₃COO)₂
Manganese Acetate Anhydrous is of pink powder and smells faint vinegar-like odour; very soluble in water (≈ 65 g / 100 mL, 20 °C); freely soluble in methanol & ethanol; practically insoluble in ether.
Grades
Manganese Acetate Anhydrous is available in Technical Pure Grade.
Specifications
Grade | Technical Pure |
Appearance: Gray powder | Iron（Fe）: ≤0.0015% |
Assay: 98.0-100.0% | Copper（Cu）: ≤0.0015% |
Water-insoluble: ≤0.015% | Nickel（Ni）: ≤0.15% |
Chloride(CI): ≤0.003% | Alkaline alkali and alkali metal: ≤0.43% |
Sulfate(SO4) : ≤0.03% | Nitrate(NO3) : ≤0.07% |
Methods of analysis
Mg assay: complex ometric EDTA titration at pH 10 with Eriochrome Black T (≥ 98 % w / w).
Acetate: ion-chromatography (total acetate 98–102 %).
Water: Karl-Fischer coulometry (≤ 1.0 %).
Trace metals: ICP-OES—Pb ≤ 5 ppm, Ca ≤ 200 ppm, Fe ≤ 20 ppm.
Chloride & sulphate: IC, each ≤ 100 ppm.
dentity confirmation: FT-IR (ν COO 1580, 1420 cm⁻¹) and XRPD vs. ICDD reference 00-027-0170.
Packing
Manganese Acetate Anhydrous is packed 1 kg, 5 kg, 25 kg bags.
Inner: two 0.1 mm LDPE bags heat-sealed.
Outer: UN-approved 1H2 / Y / S / … fibre drum or multi-wall kraft bag with PE barrier; Net weight 25 kg ± 0.2 kg.
Marking: “ HYGROSCOPIC – STORE DRY ”.
Storage and handling
Store in a cool (15–30 °C), dry, well-ventilated warehouse; keep drums tightly closed.
Protect from moisture, direct sunlight and incompatible materials (strong acids, oxidisers, alkalis).
Handle with gloves and safety goggles; avoid dust inhalation.
First-aid measures
Inhalation: remove to fresh air; give oxygen if cough persists—seek medical attention.
Skin: remove contaminated clothing; flush with water ≥ 15 min; consult physician if irritation continues.
Eyes: hold eyelids apart, irrigate with running water ≥ 15 min; immediate ophthalmologic evaluation.
Ingestion: rinse mouth; do NOT induce vomiting; drink 200–300 mL water if conscious; hospitalise with product label.
Fire & explosion data
NFPA 704: Health 1, Flammability 0, Instability 0.
Non-flammable; however, organic acetate decomposition products may support combustion > 300 °C.
Extinguishing media: water spray, dry chemical, CO₂ or alcohol-resistant foam.
Fire-runoff may contain Mg²⁺ — prevent entry to waterways.
Application
Textile & paper: dye fixative (mordant) in printing pastes; cigarette filter tow (rayon) bath additive.
De-icing & dust control: environmentally friendly acetate-based runway and sidewalk de-icer.
Molecular biology: precipitant/buffer in RNA in-vitro transcription and protein crystallisation.
Dialysis solutions: source of physiological Mg²⁺ and acetate anion.
Catalyst & reagent: acetic acid donor in esterifications; SOx scrubbing additive in coal combustion to reduce acid rain.
Properties
Appearance: pink powder | Acetone pH (0.5 M aqueous): 7.0–7.5 (neutral) |
Odour: faint vinegar-like odour | Solubility: very soluble in water (≈ 65 g / 100 mL, 20 °C); freely soluble in methanol & ethanol |
Density: 1.45 g cm⁻³ | Melting point / freezing point : 180°C |
Bulk density: ≈ 0.7 g cm⁻³ | Upper / lower flammability or explosive Limits: no data available |
Melting point: α-form 323 °C (dec.); β-form 315 °C (dec.) | Hygroscopicity: deliquescent above 65 % RH |
Physiological / toxicological properties
Acute oral LD₅₀ (rat): > 5 g kg⁻¹ (practically non-toxic).
Irritation: dust may cause mild eye, skin and respiratory-tract irritation; no sensitisation known.
Chronic: excessive magnesium intake can lead to diarrhoea, electrolyte imbalance; no evidence of carcinogenicity or mutagenicity (IARC: not listed).
TLV-TWA (Mg, elemental): 10 mg m⁻³ (OSHA, inhalable fraction).