Manganese pyrophosphate

  • Diphosphoric acid, manganese(4+) salt (1:1)
Formula
MnP2O7
Structure
Description
Buff to pink solid with no odor.

Registry Numbers and Inventories.
CAS
53731-35-4
EC (EINECS/ELINCS)
258-729-7
Merck
12,5778
Canada DSL/NDSL
NDSL
US TSCA
Listed
Korea ECL
Listed

Properties.
Formula
Mn2O7P2
Formula mass
228.88
Melting point, °C
1196
Boiling point, °C
 
Density
3.71 g/cm3 (20 C)

Hazards and Protection.
Storage
Store packages in a cool, dry location, away from direct sunlight, sources of intense heat, or where freezing is possible. Store away from incompatible materials.
Protection
Safety glasses, neoprene gloves, appropriate work clothing.
Respirators
None needed under normal circumstances of use. Use supplied air respiratory protection if oxygen levels are below 19.5% or during emergency response to a release of this product. If respiratory protection is required, follow the requirements of the Federal OSHA Respiratory Protection Standard (29 CFR 1910.134), or equivalent State standards.
Small spills/leaks
In case of a spill, clear the affected area, protect people, and respond with trained personnel. Pick-up material carefully and rinse area with soap and water. Place all spill residue in a suitable container and seal.
Stability
Stable at normal temperatures and pressures.
Incompatibilities
Strong oxidizers, strong bases.

Fire.
Fire fighting
Incipient fire responders should wear eye protection. Structural firefighters must wear Self-Contained Breathing Apparatus and full protective equipment. If possible, prevent run-off water from entering storm drains, bodies of water, or other environmentally sensitive areas. Extinguish with Water spray, foam, halon, carbon dioxide, dry chemical powder.
Health
2
 
Flammability
1
 
 
Reactivity
0
 

Health.
Exposure limit(s)
OSHA PEL: 5 mg/m3 (as Mn)
Exposure effects
The main component of this product, may cause allergic skin reaction after repeated or prolonged exposures.
   Ingestion
Though not a likely route of occupational exposure, ingestion of this product, especially in large quantities, may cause nausea, vomiting and gastric distress. For routine industrial applications.
   Inhalation
Inhalation is not anticipated to be a significant route of over-exposure to this product. In the event that inhalation of dried out particulates of this product occurs, the main health effect will be irritation of the nose, resulting in sneezing and nasal congestion.
   Skin
Contact of this product may be irritating to the skin. Due to the presence of the main component of this product, repeated or prolonged exposures to this product may cause allergic skin reaction. Symptoms may include reddening and inflammation of the skin. Contact with dried-out particulates of this product may be slightly irritating to eyes. Irritation will be alleviated when the affected area is flushed with water.
   Eyes
See skin.

First aid
 
   Ingestion
If this product is swallowed, CALL PHYSICIAN OR POISON CONTROL CENTER FOR MOST CURRENT INFORMATION.
   Inhalation
If particulates of dried-out material of this product are inhaled, remove victim to fresh air. If necessary, use artificial respiration to support vital functions. Remove or cover gross contamination to avoid exposure to rescuers.
   Skin
If this product contaminates the skin, begin flushing with soap and water. Remove exposed or contaminated clothing, taking care not to contaminate eyes. Contaminated individual must seek medical attention if redness or irritation continues after area has been rinsed.
   Eyes
If this product enters the eyes, open victim's eyes while under gently running water. Use sufficient force to open eyelids. Have victim roll eyes. Minimum flushing is for 15 minutes.

Transport.