688-73-3

Name Tributyltin
CAS 688-73-3
EINECS(EC#) 211-704-4
Molecular Formula C12H28Sn
MDL Number MFCD00009416
Molecular Weight 291.06
MOL File 688-73-3.mol
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Chemical Properties

Appearance clear colourless liquid
Melting point  <0°C
Boiling point  80 °C0.4 mm Hg(lit.)
density  1.082 g/mL at 25 °C(lit.)
vapor pressure  5 hPa (20 °C)
refractive index  n20/D 1.473(lit.)
Fp  104 °F
storage temp.  2-8°C
form  liquid
color  colorless
Specific Gravity 1.103 (20℃)
Water Solubility  REACTS
Hydrolytic Sensitivity 7: reacts slowly with moisture/water
Sensitive  Air & Moisture Sensitive
BRN  3587329
Exposure limits ACGIH: TWA 0.1 mg/m3; STEL 0.2 mg/m3 (Skin)
NIOSH: IDLH 25 mg/m3; TWA 0.1 mg/m3
InChI 1S/3C4H9.Sn/c3*1-3-4-2;/h3*1,3-4H2,2H3;
InChIKey PIILXFBHQILWPS-UHFFFAOYSA-N
Uses
Tributyltin hydride the most commonly used tin hydride，it is less toxic than the more volatile trierhyl and trimethyl analogues, and it is therefore the most widely used organostannane.
Tributyltin hydride, the reagent of choice for generating alkyl radical, is also widely used in aryl radical cyclization. Other reagents developed for this purpose include samarium diiodide, palladium reagents organosilanes as well as manganese triacetate and transition metals for carbocyclization.
CAS DataBase Reference 688-73-3(CAS DataBase Reference)
NIST Chemistry Reference Tri-n-butyltin hydride(688-73-3)
EPA Substance Registry System 688-73-3(EPA Substance)
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Safety Data

Symbol(GHS)  Flame (GHS02)Skull and Crossbones (GHS06)Health Hazard (GHS08)Environment (GHS09)
GHS02,GHS06,GHS08,GHS09
Signal word  Danger
Hazard statements  H226-H301-H312-H315-H319-H360FD-H372-H410
Precautionary statements  P210-P273-P280-P301+P310-P303+P361+P353-P305+P351+P338
Hazard Codes  T,N,F
Risk Statements 
R10:Flammable.
R21:Harmful in contact with skin.
R25:Toxic if swallowed.
R36/38:Irritating to eyes and skin .
R48/23/25:Toxic: danger of serious damage to health by prolonged exposure through inhalation and if swallowed .
R50/53:Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R15:Contact with water liberates extremely flammable gases.
R67:Vapors may cause drowsiness and dizziness.
R65:Harmful: May cause lung damage if swallowed.
R11:Highly Flammable.
Safety Statements 
S35:This material and its container must be disposed of in a safe way .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S60:This material and/or its container must be disposed of as hazardous waste .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S62:If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label .
S36/37:Wear suitable protective clothing and gloves .
S33:Take precautionary measures against static discharges .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S16:Keep away from sources of ignition-No smoking .
RIDADR  UN 1993 3/PG 3
WGK Germany  3
RTECS  WH8675000
F  1-10
Autoignition Temperature >250 °C
TSCA  Yes
REACH Registrations Active
HazardClass  6.1
PackingGroup  II
HS Code  29310095
Storage Class 3 - Flammable liquids
Hazard Classifications Acute Tox. 3 Oral
Acute Tox. 4 Dermal
Aquatic Acute 1
Aquatic Chronic 1
Eye Irrit. 2
Flam. Liq. 3
Repr. 1B
Skin Irrit. 2
STOT RE 1
Safety Profile
Moderately toxic by inhalation. When heated to decomposition it emits acrid smoke and irritating fumes. See also TIN COMPOUNDS.
Hazardous Substances Data 688-73-3(Hazardous Substances Data)

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