Basic information
- Name:
Manganese, tricarbonyl(h5-2,4-cyclopentadien-1-yl)-
- Superlist Name:
- Cyclopentadienylmanganese tricarbonyl
- CAS No.:
12079-65-1
- Molecular Structure:

- Formula:
- C8H5MnO3
- Molecular Weight:
- 204.07
- Synonyms:
- Cyclopentadienylmanganesetricarbonyl (6CI);Manganese, tricarbonyl-p-cyclopentadienyl- (8CI);Cyclopentadienyl-p-tricarbonylmanganese;Cyclopentadienyltricarbonylmanganese;Cymantrene;Manganesecyclopentadienyltricarbonyl;Tricarbonyl(h5-cyclopentadienyl)manganese;Tricarbonyl-p-cyclopentadienylmanganese;Tricarbonylcyclopentadienylmanganese;h5-Cyclopentadienylmanganese tricarbonyl;p-Cyclopentadienylmanganesetricarbonyl;
- EINECS:
- 235-142-4
- Melting Point:
- 72-76 °C(lit.)
- Appearance:
- yellow crystals or crystalline chunks
- Hazard Symbols:
T+- Risk Codes:
- 28
- Safety Description:
- 28-36/37-45 Details
- Transport Information:
- UN 2811 6.1/PG 2
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Chemistry
Product Name: Cyclopentadienylmanganese tricarbonyl (CAS NO.12079-65-1)

Molecular Formula: C8H5MnO3
Molecular Weight: 204.06g/mol
Mol File: 12079-65-1.mol
Einecs: 235-142-4
Appearance: Yellow crystals or crystalline chunks
Melting Point: 72-76 °C(lit.)
Boiling point: 41.5 °C at 760 mmHg
Sensitive: Air Sensitive
Enthalpy of Vaporization: 27.4 kJ/mol
Vapour Pressure: 418 mmHg at 25°C
H-Bond Donor: 0
H-Bond Acceptor: 4
Product Categories: ManganeseVapor Deposition Precursors; Catalysis and Inorganic Chemistry; Chemical Synthesis; Manganese; Precursors by Metal
Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| mouse | LD50 | intravenous | 710ug/kg (0.71mg/kg) | U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. Vol. NX#11285, | |
| mouse | LD50 | oral | 150mg/kg (150mg/kg) | BRAIN AND COVERINGS: "CHANGES IN CIRCULATION (HEMORRHAGE, THROMBOSIS, ETC.)" AUTONOMIC NERVOUS SYSTEM: OTHER (DIRECT) PARASYMPATHOMIMETIC BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD | Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 28(4), Pg. 29, 1963. |
| rat | LCLo | inhalation | 120mg/m3/2H (120mg/m3) | VASCULAR: BP LOWERING NOT CHARACTERIZED IN AUTONOMIC SECTION BLOOD: HEMORRHAGE LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES | Hygiene and Sanitation Vol. 30(4-6), Pg. 40, 1965. |
| rat | LD50 | intraperitoneal | 14mg/kg (14mg/kg) | BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD LUNGS, THORAX, OR RESPIRATION: DYSPNEA LUNGS, THORAX, OR RESPIRATION: CHRONIC PULMONARY EDEMA | Toxicology. Vol. 34, Pg. 341, 1985. |
| rat | LD50 | oral | 22mg/kg (22mg/kg) | Toxicology. Vol. 34, Pg. 341, 1985. |
Consensus Reports
Reported in EPA TSCA Inventory. Manganese and its compounds are on the Community Right-To-Know List.
Safety Profile
A poison by ingestion, inhalation, intraperitoneal, and intravenous routes. A mild narcotic which can damage kidneys. When heated to decomposition it emits acrid smoke and irritating fumes. See also MANGANESE COMPOUNDS and CARBON MONOXIDE.
Safety Information of Cyclopentadienylmanganese tricarbonyl (CAS NO.12079-65-1):
Hazard Codes: T+![]()
Risk Statements: 28
28: Very Toxic if swallowed
Safety Statements: 28-36/37-45
28: After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer)
36: Wear suitable protective clothing
37: Wear suitable gloves
45: In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)
Standards and Recommendations
OSHA PEL: TWA 0.1 mg(Mn)/m3 (skin)
ACGIH TLV: TWA 0.1 mg(Mn)/m3
Specification
Cyclopentadienylmanganese tricarbonyl ,its CAS NO. is 12079-65-1,the synonyms is (Eta5-Cyclopentadienyl) manganese tricarbonyl ; Cyclopentadienyl-p-tricarbonylmanganese ; Cyklopentadientrikarbonylmanganium ; Cymantrene ; Manganese, cyclopentadienyltricarbonyl- ; Manganese, tricarbonyl-pi-cyclopentadienyl- ; manganese,cyclopentadienyltricarbonyl ; Manganese,tricarbonyl(η5-2,4-cyclopentadien-1-yl)- .

