IUPAC Name: Manganese(2+) diperchlorate hexahydrate
Following is the structure of Manganese perchlorate hexahydrate (CAS NO.15364-94-0):
                     
Empirical Formula: H₁₂Cl₂MnO₁₄
Molecular Weight: 361.9309 g/mol
EINECS: 237-390-9
Melting point: 165 °C
Sensitive: Hygroscopic
Solubility in water: soluble in water
Appearance of Manganese perchlorate hexahydrate (CAS NO.15364-94-0): Pink Crystalline Solid
Canonical SMILES: O.O.O.O.O.O.[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O.[Mn+2]
InChI: InChI=1S/2ClHO4.Mn.6H2O/c2*2-1(3,4)5;/h2*(H,2,3,4,5);6*1H2/q;+2;/p-2
InChIKey: AIFGVOMWPFMOCN-UHFFFAOYSA-L

 Manganese perchlorate hexahydrate (CAS NO.15364-94-0) hasn't been listed as a carcinogen byACGIH, IARC, NTP, or CA Prop 65.  And the toxicological properties have not been fully investigated. You can see actual entry in RTECS for complete information.

 Manganese and its compounds are on the Community Right-To-Know List.

Moderately is toxic by intraperitoneal route. The perchlorate is a powerful oxidizer. Explodes. Incompatible with 2,2-dimethoxypropane. When heated to decomposition, Manganese perchlorate hexahydrate (CAS NO.15364-94-0) emits toxic fumes of Cl⁻. See also MANGANESE COMPOUNDS.
Hazard Codes: O,Xi
Risk Statements 8-36/37/38 
R8 :Contact with combustible material may cause fire. 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements 15-17-26-36 
S15:Keep away from heat. 
S17:Keep away from combustible material. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing.
RIDADR: UN 1481 5.1/PG 2
WGK Germany: 3
RTECS: SC9275000
F: 3
HazardClass: 5.1
PackingGroup: II

OSHA PEL: CL 5 mg(Mn)/m³
ACGIH TLV: TWA 0.03 mg(Mn)/m³
DOT Classification:  5.1; Label: Oxidizer

 Manganese perchlorate hexahydrate , its cas register number is 15364-94-0. It also can be called Perchloric acid, manganese(2+) salt, hexahydrate . Manganese perchlorate hexahydrate (CAS NO.15364-94-0) is stable, and it should avoid the condition like incompatible materials,combustible materials, exposure to moist air or water. And it is incompatibilities with other materials Reducing agents, strong acids, active metals, finely powdered metals, phosphorus, sulfur. While its hazardous decomposition products are carbon Irritating and toxic fumes and gases, oxygen, oxides of manganese. And its hazardous polymerization will not occur.