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CAS RN: 546-67-8 | Product Number: L0021

Lead Tetraacetate (contains Acetic Acid)


Purity: >96.0%(T)
Synonyms:
  • LTA (contains Acetic Acid)
  • Lead(IV) Acetate (contains Acetic Acid)
Documents:
25G
$65.00
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500G
$465.00
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* The storage conditions are subject to change without notice.


Product Number L0021
Purity / Analysis Method >96.0%(T)
Molecular Formula / Molecular Weight C__8H__1__2O__8Pb = 443.38  
Physical State (20 deg.C) Solid
Storage Temperature 0-10°C
Store Under Inert Gas Store under inert gas
Condition to Avoid Air Sensitive,Moisture Sensitive,Heat Sensitive
CAS RN 546-67-8
Reaxys Registry Number 3595640
PubChem Substance ID 87571991
Merck Index (14) 5423
MDL Number

MFCD00008693

Specifications
Appearance White to Almost white powder to crystal
Purity(Iodometric Titration) min. 96.0 %
Properties (reference)
Melting Point 180 °C
Solubility (soluble in) Alcohol,Nitrobenzene,Chloroform,Benzene
GHS
Pictogram Pictogram Pictogram Pictogram
Signal Word Danger
Hazard Statements H302 + H332 : Harmful if swallowed or if inhaled.
H315 : Causes skin irritation.
H361 : Suspected of damaging fertility or the unborn child.
H373 : May cause damage to organs through prolonged or repeated exposure.
H341 : Suspected of causing genetic defects.
H350 : May cause cancer.
H272 : May intensify fire; oxidizer.
Precautionary Statements P501 : Dispose of contents/ container to an approved waste disposal plant.
P260 : Do not breathe dust/ fume/ gas/ mist/ vapors/ spray.
P270 : Do not eat, drink or smoke when using this product.
P202 : Do not handle until all safety precautions have been read and understood.
P220 : Keep/Store away from clothing/ combustible materials.
P210 : Keep away from heat.
P201 : Obtain special instructions before use.
P221 : Take any precaution to avoid mixing with combustibles.
P271 : Use only outdoors or in a well-ventilated area.
P264 : Wash skin thoroughly after handling.
P280 : Wear protective gloves/ protective clothing/ eye protection/ face protection.
P302 + P352 : IF ON SKIN: Wash with plenty of water.
P370 + P378 : In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish.
P308 + P313 : IF exposed or concerned: Get medical advice/ attention.
P362 + P364 : Take off contaminated clothing and wash it before reuse.
P332 + P313 : If skin irritation occurs: Get medical advice/ attention.
P301 + P312 + P330 : IF SWALLOWED: Call a POISON CENTER/doctor if you feel unwell. Rinse mouth.
P304 + P340 + P312 : IF INHALED: Remove person to fresh air and keep comfortable for breathing. Call a POISON CENTER/doctor if you feel unwell.
P405 : Store locked up.
Related Laws:
RTECS# AI5300000
Transport Information:
UN Number UN3087
Class 5.1 / 6.1
Packing Group III
H.S.code* 2915.29-000
*This code is applied to the products when TCI exports from Japan and not for import in your country.
Application
Generation of Benzyne using Pb(OAc)4 and Synthesis of Dibenzocyclobutadiene

L0021

Reference


Application
Oxidation of 1,2-Diols (Criegee Oxidation)1)

Typical Procedure:
To a solution of olefine 1 (11.9 mg, 0.030 mmol) and DMAP (7.33 mg, 0.060 mmol, 2 eq.) in t-BuOH (100 µL) is added a solution of OsO4 (7.62 mg, 0.030 mmol, 1 eq.) in water (200 µL). The orange-red solution is stirred at rt for 5-10 min. Solid Na2SO3 (19 mg, 0.15 mmol, 5 eq.) is added. The resulting mixture is applied directly to preparative TLC (CHCl3 : MeOH : NH4OH = 25 : 10 : 1) and diol is collected by washing silica gel with a mixture of CHCl3 : MeOH = 2 : 1. Concentration under reduced pressure (< 25 ℃) affords the slightly unstable diol 2, which is dissolved in CH2Cl2 (2 mL). The solution then is cooled to -20 ℃ and AcOH (9.0 mg, 8.6 µL, 5 eq.) is added, followed by solid Pb(OAc)4 (11 mg, 0.025 mmol) in portions. TLC (CH2Cl2 : MeOH = 1 : 1 and 25 : 1) monitors the end of the reaction. The resulting yellow solution is stirred at -20 ℃ for 5-10 min, washed with water, saturated NaHCO3 and brine, dried over Na2SO4 and evaporated under reduced pressure to give 3 (8.5 mg, Y. 71%) of silica gel labile ketone as a yellow powder.

References


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