DACTARI
Tin
Physico-chemical properties
DACTARI
Element
Symbol
Atomic number
Atomic weight
Chemical series
Discovered
Origin of the name
Electron configuration
Density
Melting point
Boiling point
Pearson classification (acid and base)
Electronegativity (Pauling scale)
Ionic Radius (Marcus)
Coordination number
Oxidation states (main in bold)
Redox potential
Main mineral compounds (solids)
Main Industrial compounds (solids)
Main industrial compounds (solution)
Main isotopes
Tin
Sn
50
118.71
poor metals
Used from antiquity as a component of bronze (3500 BC)
Old English “tin” and latin “stannum”.
[Kr] 4d10 5s2 5p2
7.26 g/cm3
231.9°C
2602°C
Border
1.96
0.69 A
4-8
4+
4 (Sn ), 2 (Sn2+)
0.14 V (Sn2+/Sn4+), -0.14 V (Sn/Sn2+)
Stannite, cylindrite, frankeite, cassiterite...
SnO2, SnO, SnCl2, SnCl4, Sn(OH)2, Sn(OH)4,
organotin (dibutyltin, tributyltin, triethyltin…)
Stannate (SnO32-), stannite (SnO2-), SnCl2, SnCl4…
125Sn (T = 9.64 d, , ) (1g = 4.01 1015 Bq)
1/2
126Sn (T = 2.32 105 y, ) (1g = 4.35 108 Bq)
1/2
DACTARI
Tin
Acute toxicity
DACTARI
Element
Symbol
Tin
Sn
LD 50 (mg/kg) (rat/oral)
Classification
LD50*
900
3
900
3
10 - 6000
1 - NC
1500 - 6000
3 - NC
20 - 50
1-2
148 - 194
2
1-3
1
10 - 12
1
ATSDR, CHEMTREC
0.02 (ICRP 71)
/
Tin (inorganic compounds)
Tin chloride : SnCl4
Tin (organic compounds)
monoorganotin
dibutyltin
Tributyltin oxide
Triethyltin
Trimethyltin
References
Fractionnal absorption : fA (ICRP 100)
Materno-fœtal transfer (ICRP 88)
*Classification of Acute Toxicity on the Basis of the LD 50.
Very Toxic (1)
Oral (mg/kg)
Inhalation
(mg/l/4h)
Dermal
(mg/kg)
25
0.25 for
aerosols or
particulates
Toxic (2)
R28
>25-200
R25
>200-2000
R26
>0.25-1 for
aerosols or
particulates
>0.5-2 for gases
or vapours
R23
>1-5 for
aerosols or
particulates
>2-20 for gases
or vapours
R20
R27
>50-400
R24
>400-2000
R21
0.5 for gases
or vapours
50
Harmful (3)
R22
Non Classified
(NC)
>2000
>5 for aerosols
or particulates
>20 for gases or
vapours
>2000
This table is based on the COMMISSION DIRECTIVE 2001/59/EC of 6 August 2001 adapting to technical progress for the
28th time Council Directive 67/548/EEC on the approximation of the laws, regulations and administrative provisions relating
to the classification, packaging and labelling of dangerous substances.
DACTARI
Tin
Chronic toxicity
DACTARI
Element
Symbol
WHO
RN water guide value (Bq/L)
chemical water guide value (mg/L)
CMR classification
IARC (1 to 4)
CEE
EPA
Non carcinogen
Critical effect
RfD (reference dose) mg/kg/d
NOAEL mg/kg/d
Risk phrases
Risk group (Delacroix)
# Specific activity : 125Sn (1g = 4.01 1015 Bq)
IARC carcinogenicity to humans:
C:1
C : 2A
C : 2B
C:3
C:4
Carcinogenic to humans
Probably carcinogenic to humans
Possibly carcinogenic to humans
Unclassifiable as to carcinogenicity for humans
Probably not carcinogenic for humans
Radiotoxic groups (Delacroix et al., 2002) :
G 1 : Exemption < 104 Bq
G 2 : Exemption < 105 Bq
G 3 : Exemption = 106 Bq
G 4 : Exemption = 107 Bq
G 5 : Exemption > 108 Bq
Isotopes
125Sn
100
-
Tin
Sn
Chemical compound
/
/
/
/
Target organs : bone, kidneys
Inorganic : 30 – 400
Organic : 2 - 30
2