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865-48-5

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Identification

Name
Sodium tert-butoxide
CAS
865-48-5
Synonyms
NatB
sodium 2-methylpropan-2-olate
SODIUM T-BUTOXIDE
SODIUM TERT-BUTOXIDE
SODIUM TERT-BUTYLATE
SODIUM TERTIARY BUTOXIDE
STB
sodiumt-butoxide,stb
sodiumt-butoxide,stb,in
sodiumt-butoxide,stb,intetrahydrofuran
Sodium tert-butyl alcohol
Sodium ter-butoxide
Sodium tert-butoxide, in tetrahydrofuran
Stb(Sodium-Tert-Butoxide)
Sodiumtert-butoxide,98%
Sodiumtert-butoxide,97%
Sodium tert-butoxide, pure, 98%
Sodiumt-butoxide,min.98%
2-Propanol, 2-methyl-, sodium salt
2-Methyl-2-propanol sodium salt
EINECS(EC#)
212-741-9
Molecular Formula
C4H9NaO
MDL Number
MFCD00040575
Molecular Weight
96.1
MOL File
865-48-5.mol

Chemical Properties

Appearance
white to light tan crystalline powder
Melting point 
180 °C
mp 
180 °C
Boiling point 
180°C/1mmHg
bp 
180°C/1mmHg
density 
1,104 g/cm3
refractive index 
n20/D1.413
Fp 
12°C
storage temp. 
Flammables area
form 
Powder
Specific Gravity
1.104
color 
white to off-white
Water Solubility 
reacts
Hydrolytic Sensitivity
7: reacts slowly with moisture/water
Sensitive 
Air Sensitive & Hygroscopic
BRN 
3654215
CAS DataBase Reference
865-48-5(CAS DataBase Reference)
Storage Precautions
Store under nitrogen
EPA Substance Registry System
865-48-5(EPA Substance)

Safety Data

Hazard Codes 
F,C,Xi
Risk Statements 
R11:Highly Flammable.
R14:Reacts violently with water.
R34:Causes burns.
R37:Irritating to the respiratory system.
R35:Causes severe burns.
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S43:In case of fire, use ... (indicate in the space the precise type of fire-fighting equipment. If water increases the risk add-Never use water) .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S7/8:Keep container tightly closed and dry .
S8:Keep container dry .
S16:Keep away from sources of ignition-No smoking .
S36:Wear suitable protective clothing .
RIDADR 
UN 3206 4.2/PG 2

WGK Germany 
3


1-3-10
TSCA 
Yes
HazardClass 
8
PackingGroup 
II
HS Code 
29051900

Raw materials And Preparation Products

Material Safety Data Sheet(MSDS)

Hazard Information

Chemical Properties
white to light tan crystalline powder
Uses
Sodium tert-butoxide is used as a strong base and a non-nucleophilic base. In organic synthesis, it serves as an intermediate in various reactions like condensation, rearrangement and ring-opening. Further, it finds use in agrochemicals, pharmaceuticals, colorants, aroma chemicals, detergents and biodiesel. It acts as a catalyst in polymerization and isomerization reactions.
Purification Methods
Its solubility in tert-BuOH is 0.208M at 30.2o and 0.382M at 60o, and it is quite soluble in tetrahydrofuran (32g/100g). It should not be used if it has a brown colour. [Feuer J Am Chem Soc 78 4364 1956, Hurd Inorg Synth I 87 1939, IR: Seubold J Org Chem 21 156 1956, Beilstein 1 IV 1609.]

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