PLUTONIUM
147
4. CHEMICAL AND PHYSICAL INFORMATION
Table 4-1. Chemical Identity of Plutonium and Selected Plutonium Compounds
Characteristic
Information
a
Chemical name
Plutonium nitrate Plutonium(VI)
fluoride
Plutonium(IV)
Oxalate
c
Plutonium(IV)
fluoride
Synonym(s)
Nitric acid,
Plutonium
No data
Plutonium
plutonium(4+)
hexafluoride
tetrafluoride
salt
Registered trade name(s)
No data
No data
No data
No data
Chemical formula
Pu(NO
3
)
4
PuF
6
Pu(C
4
O
8
)
2
PuF
4
Identification numbers:
CAS registry
13823-27-3
13693-06-6
14448-76-1
c
13278-81-4
d
13709-56-3
NIOSH RTECS
No data
No data
No data
No data
EPA hazardous waste
No data
No data
No data
No data
OHM/TADS
No data
No data
No data
No data
DOT/UN/NA/IMDG shipping No data
No data
No data
No data
EINECS
238-979-3
e
No data
No data
No data
HSDB
No data
No data
No data
No data
NCI
No data
No data
No data
No data
a
All information obtained from ChemIDplus 2009, Lide 2008, and HSDB 2009 except where noted
b
This is the generic CAS Registry Number for plutonium (unspecified form). Each isotope has an individual CAS
Registry Number (Table 4-3)
c
ChemBioFinder 2009
d
Clark et al. 2006
e
This EINCES number refers to plutonium nitrate (CAS Registry No. 14913-29-2) with a chemical formula of
Pu(NO
3
)
x
. (ChemIDplus 2009)
CAS = Chemical Abstracts Service; DOT/UN/NA/IMDG = Department of Transportation/United Nations/North
America/International Maritime Dangerous Goods Code; EINECS = European Inventory of Existing Chemical
Substances EPA = Environmental Protection Agency; HSDB = Hazardous Substances Data Bank; NCI = National
Cancer Institute; NIOSH = National Institute for Occupational Safety and Health; OHM/TADS = Oil and Hazardous
Materials/Technical Assistance Data System; RTECS = Registry of Toxic Effects of Chemical Substances
PLUTONIUM
148
4. CHEMICAL AND PHYSICAL INFORMATION
Table 4-2. Physical and Chemical Properties of Plutonium and Selected
Plutonium Compounds
Property
Information
a
Chemical name
Plutonium
Plutonium dioxide
Plutonium nitride
Molecular weight
b
244
276
258
Physical description
Silver, white metal
Six allotropic
modifications
under ordinary
pressure
c
Yellow-brown cubic
crystals
Gray cubic crystals
Melting point
Boiling point
Density
Odor
640 °C
3,228 °C
19.7 g/cm
3
No data
2,390 °C
No data
11.5 g/cm
3
No data
2,550 °C
No data
14.4 g/cm
3
No data
Odor threshold:
Water
No data
No data
No data
Air
No data
No data
No data
Solubility:
Water
No data
No data
No data
Organic solvents
No data
No data
No data
Other
Partition coefficients:
Soluble in
hydrochloric acid;
insoluble in nitric
acid, concentrated
hydrogen sulfide
No data
No data
Log K
ow
Log K
oc
No data
No data
No data
No data
No data
No data
Vapor pressure
No data
No data
No data
Henry's law constant
Autoignition temperature
No data
No data
No data
No data
No data
No data
Flashpoint
Flammability limits
No data
No data
No data
No data
No data
No data
Conversion factors
No data
No data
No data
Explosive limits
No data
No data
No data
PLUTONIUM
149
4. CHEMICAL AND PHYSICAL INFORMATION
Table 4-2. Physical and Chemical Properties of Plutonium and Selected
Plutonium Compounds
Property
Information
a
Chemical name
Plutonium nitrate Plutonium
Plutonium
Plutonium
hexafluoride
oxalate
tetrafluoride
Molecular weight
b
No data
358
No data
320
Physical description
No data
Red-brown
Green-yellow
Red-brown
orthorhombic
solid
d
monoclinic
crystals
crystals
Melting point
No data
51.6 °C
No data
1,037 °C
Boiling point
No data
No data
No data
No data
Density
No data
5.08 g/cm
3
No data
7.1 g/cm
3
Odor
No data
No data
No data
No data
Odor threshold:
Water
No data
No data
No data
No data
Air
No data
No data
No data
No data
Solubility:
Water
No data
No data
No data
No data
Organic solvents
No data
No data
No data
No data
Other
No data
No data
No data
No data
Partition coefficients:
No data
Log K
ow
No data
No data
No data
No data
Log K
oc
No data
No data
No data
No data
Vapor pressure
No data
No data
No data
No data
Henry's law constant
No data
No data
No data
No data
Autoignition temperature
No data
No data
No data
No data
Flashpoint
No data
No data
No data
No data
Flammability limits
No data
No data
No data
No data
Conversion factors
No data
No data
No data
No data
Explosive limits
No data
No data
No data
No data
a
All information obtained from HSDB 2009 and Lide 2008, except where noted
b
Molecular weights will be dependent on the isotope of plutonium
c
α
-phase, simple monoclinic;
β
-phase, body-centered monoclinic;
γ
-phase, face-centered orthorhombic;
δ
phase,
face-centered cubic;
δ
’’ phase, body-centered tetragonal;
εε
phase, body-centered cubic (Clark et al. 2006)
d
Pu(C
2
O
4
)
2
•6H
2
O (CAS No. 26588-74-9) (Clark et al. 2006)
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