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(+)-DIACETYL-L-TARTARIC ANHYDRIDE

(+)-DIACETYL-L-TARTARIC ANHYDRIDE
(+)-DIACETYL-L-TARTARIC ANHYDRIDE structure
CAS No.
6283-74-5
Chemical Name:
(+)-DIACETYL-L-TARTARIC ANHYDRIDE
Synonyms
DATA;NSC 7712;DIACETYL-L-TARTARIC ANHYDRIDE;DI-O-ACETYL-L-TARTARIC ANHYDRIDE;(+)-DIACETYL-L-TARTARIC ANHYDRIDE;(+)-DI-O-ACETYL-L-WEINSURE-ANHYDRID;O,O-diacetyl tartaric acid anhydride;(+)-DI-O-ACETYL-L-TARTARIC ANHYDRIDE;(3R)-3α,4β-Diacetoxyoxolane-2,5-dione;(+)-Diacetyl-L-tartaric anhydride,97%
CBNumber:
CB0717661
Molecular Formula:
C8H8O7
Formula Weight:
216.14
MOL File:
6283-74-5.mol

(+)-DIACETYL-L-TARTARIC ANHYDRIDE Properties

Melting point:
130-135 °C(lit.)
Boiling point:
316.55°C (rough estimate)
Density 
1.5197 (rough estimate)
refractive index 
90 ° (C=0.5, CHCl3)
storage temp. 
−20°C
form 
Crystals or Needles
color 
White
optical activity
[α]20/D +59°, c = 6 in acetone
Water Solubility 
Soluble in methanol and dichloromethane. Slightly soluble in water.
Sensitive 
Moisture Sensitive
BRN 
87315
CAS DataBase Reference
6283-74-5(CAS DataBase Reference)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-36
WGK Germany  3
3-10-21
HS Code  29321900
Symbol(GHS):
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405 Store locked up.

(+)-DIACETYL-L-TARTARIC ANHYDRIDE price More Price(2)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 358924 (+)-O,O′-Diacetyl-L-tartaric anhydride 97% 6283-74-5 50g $103 2018-11-20 Buy
TCI Chemical D1911 (+)-Diacetyl-L-tartaric Anhydride >97.0%(T) 6283-74-5 25g $48 2018-11-22 Buy

(+)-DIACETYL-L-TARTARIC ANHYDRIDE Chemical Properties,Uses,Production

Chemical Properties

White Crystalline Solid

Purification Methods

If the IR is good, i.e. no OH bands, then keep it in a vacuum desiccator overnight (over P2O5/paraffin) before use. If OH bands are present then reflux 4g in Ac2O (12.6mL) containing a few drops of conc H2SO4 for 10minutes (use a relatively large flask), pour onto ice, collect the crystals, wash with dry *C6H6 (2 x 2mL), stir with 17mL of cold Et2O, filter and dry in it a vacuum desiccator as above, or store it in dark evacuated ampoules under N2 in small aliquots. It is not very stable in air, the melting point of the crystals drop one degree in the first four days then remains constant (132-134o). If placed in a stoppered bottle, it becomes gummy and the m falls 100o in three days. Recrystllisation leads to decomposition. If good quality anhydride is required it, should be prepared freshly from tartaric acid. It sublimes in a CO2 atmosphere. [Shriner & Furrow Org Synth Coll Vol IV 242 1963, Bell Aust J Chem 34 671 1981, Beilstein 18 III/IV 2296.]

(+)-DIACETYL-L-TARTARIC ANHYDRIDE Preparation Products And Raw materials

Raw materials

Preparation Products


(+)-DIACETYL-L-TARTARIC ANHYDRIDE Suppliers

Global( 79)Suppliers
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Mainchem Co., Ltd.
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