ASTM E465 Chemical Analysis Testing for Ferrovanadium
ASTM E465 – 11 explains the determination of manganese dioxide in manganese ore. The results are expressed as manganese dioxide. It is done by two methods (Ferrous Ammonium Sulfate) and (Periodate (Sodium Oxalate) interchangeably. Redox titrimetry is being performed. The values are stated in SI units as they’re considered standard units.
TRUSTED BY
- Overview
- Scope, Applications, and Benefits
- Test Process
- Specifications
- Instrumentation
- Results and Deliverables
ASTM E465 Determination of Manganese (IV) – Overview
ASTM E465 – 11 describes a redox titrimetric method for determining manganese (IV) content in manganese ores. The method is based on the reduction of manganese (IV) to a lower oxidation state using a suitable reducing agent, followed by titration to quantify the oxidizing capacity corresponding to Mn(IV) content.
This test is widely used for accurate compositional analysis of manganese ores, where Mn(IV) plays a critical role in metallurgical and chemical processing. The method provides reliable quantification by correlating redox reactions with titrant consumption, ensuring precise evaluation of ore quality and processing suitability.
Scope, Applications, and Benefits
Scope
ASTM E465 specifies a volumetric redox titration method to determine manganese (IV) in ores. It focuses on quantifying oxidizing manganese species through controlled chemical reactions and titration techniques.
- Applicable to manganese ores and concentrates
- Suitable for Mn(IV) content determination
- Based on oxidation-reduction titration principles
- Enables accurate compositional analysis
Applications
- Quality assessment of manganese ores
- Metallurgical process control
- Raw material characterization
- Mining and mineral processing industries
- Laboratory chemical analysis
Benefits
- High accuracy for Mn(IV) quantification
- Reliable and reproducible titration method
- Suitable for routine laboratory testing
- Cost-effective compared to instrumental methods
- Supports process optimization and control
ASTM E465 Determination of Manganese (IV) – Test Process
Sample Dissolution
Dissolve ore sample using appropriate acids to release manganese species into solution.
1Reduction Reaction
Reduce Mn(IV) to a lower oxidation state using a standard reducing agent.
2Titration Step
Titrate excess reducing agent with standard oxidizing solution.
3Calculation of Mn(IV)
Determine Mn(IV) content based on titrant consumption and reaction stoichiometry.
4ASTM E465 Determination of Manganese (IV) – Technical Specification
| Parameter | Details |
|---|---|
| Standard | ASTM E465 – 11 |
| Method | Redox titrimetric analysis |
| Reaction Type | Oxidation-reduction involving Mn(IV) species |
| Titration Type | Back titration or direct redox titration |
| Detection Limit | Suitable for low to moderate Mn(IV) concentrations |
| Applicable Materials | Manganese ores and concentrates |
| Measurement Basis | Titrant volume proportional to Mn(IV) content |
| Units | Percentage (%) Mn(IV) |
Instrumentation Used for Testing
- Burette and titration setup
- Analytical balance
- Volumetric flasks and pipettes
- Hot plate or digestion unit
- Magnetic stirrer
Results and Deliverables
- Mn(IV) concentration (%)
- Titration data and calculations
- Reagent and standardization details
- Test conditions and observations
- Final analytical report
Partnering with Infinita Lab for Optimal Results
Infinita Lab addresses the most frustrating pain points in the ASTM E465 testing process: complexity, coordination, and confidentiality. Our platform is built for secure, simplified support, allowing engineering and R&D teams to focus on what matters most: innovation. From kickoff to final report, we orchestrate every detail—fast, seamlessly, and behind the scenes.
Looking for a trusted partner to achieve your research goals? Schedule a meeting with us, send us a request, or call us at (888) 878-3090 to learn more about our services and how we can support you. Request a Quote
Frequently Asked Questions
ASTM E465 targets Mn(IV) by utilizing its oxidizing properties in redox reactions. Only Mn(IV) participates in the defined reaction sequence, allowing selective quantification without measuring total manganese content present in other oxidation states.
Redox titrimetry directly measures the oxidizing capacity of Mn(IV), providing a stoichiometric relationship between titrant consumption and analyte concentration, ensuring high accuracy and reliability in determining specific oxidation states.
Back titration improves accuracy when direct titration is difficult or slow. Excess reducing agent reacts with Mn(IV), and the remaining amount is titrated, allowing precise calculation of Mn(IV) based on consumed reagent.
Other oxidizing or reducing species can react with titrants, leading to erroneous results. Proper sample preparation and selective reaction conditions are essential to eliminate or minimize such interferences.
By accurately determining Mn(IV) content, the method helps optimize reduction and processing conditions in metallurgical operations, ensuring efficient extraction and improved product quality.
Request a Quote
Submit your material details and receive testing procedures, pricing, and turnaround time within 24 hours.
Quick Turnaround and Hasslefree process
Confidentiality Guarantee
Free, No-obligation Consultation
100% Customer Satisfaction
