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95-96-5

D,L-Lactide S

CAS: 95-96-5

Molecular Formula: C6H8O4

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95-96-5 - Names and Identifiers

Name D,L-Lactide S
Synonyms Lactide
dilactide
DL-Lactide
DL-Dilactide
D,L-Lactide S
CAS 95-96-5
EINECS 202-468-3
InChI InChI=1/C6H8O4/c1-3-5(7)10-4(2)6(8)9-3/h3-4H,1-2H3

95-96-5 - Physico-chemical Properties

Molecular FormulaC6H8O4
Molar Mass144.13
Density1.186±0.06 g/cm3(Predicted)
Melting Point116-119℃
Boling Point138℃(8 torr)
Flash Point180°C
Solubility Soluble in chloroform and methanol. Slightly soluble in benzene.
AppearanceForm Crystalline Powder, color White
Storage Condition2-8°C
SensitiveEasily absorbing moisture
MDLMFCD00011685
UseUse the racemic lactide is subjected to an enzymatic alcoholysis reaction catalyzed by commercially available Novozym(R)435 to produce alkyl (R)-lactate and alkyl (S,S)-lactyl lactate, with very high yield and enantiomeric purity.

95-96-5 - Risk and Safety

Hazard SymbolsXi - Irritant
Irritant
Risk CodesR36/37/38 - Irritating to eyes, respiratory system and skin.
Safety DescriptionS26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S37/39 - Wear suitable gloves and eye/face protection
WGK Germany2
RTECSJH1100000
TSCAYes
HS Code29322090

95-96-5 - Upstream Downstream Industry

Downstream Productspolylactic acid and its copolymer
Potassium lactate

95-96-5 - Nature

solubility Soluble in chloroform and methanol. Slightly soluble in benzene.
sensitivity Moisture Sensitive
BRN 82121
NIST chemical information 1,4-Dioxane-2,5-dione, 3,6-dimethyl-(95-96-5)
EPA chemical information 1,4-Dioxane-2,5-dione, 3,6-dimethyl- (95-96-5)
Last Update：2024-04-09 20:52:54

95-96-5 - Uses and synthesis methods

introduction

Lactide is a colorless transparent flake or needle-like crystal with a melting point of 93-95°C, easily soluble in chloroform, ethanol, and insoluble in water. Easy to hydrolyze, easy to polymerize. It can be used for the production of medical high polylactic acid, cyclic esterifying agent.

market

At present, domestic polylactic acid production enterprises mainly rely on imports of lactide. The international companies capable of producing lactide are Nature Works and Total Koben. Since the former is not sold to the outside world, Chinese enterprises mainly import lactide from Total-Koben. However, as the global demand for high-quality lactide continues to grow, Total Koben is also gradually shrinking its external sales.

production technology

lactide is produced from lactic acid raw materials, mainly by condensation polymerization of lactic acid to generate lactic acid oligomers, and then depolymerization of lactic acid oligomers to generate lactide.

The whole process needs to be carried out under high temperature, negative pressure and catalytic conditions. During this period, in order to improve the overall yield, the unreactants need to be refluxed and reused, and finally qualified lactide products are obtained through certain purification methods. The lactide production process mainly includes polycondensation, depolymerization cyclization and purification of several units

Last Update：2024-04-09 18:58:34
95-96-5
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Hefei TNJ Chemical Industry Co.,Ltd.
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CAS: 95-96-5
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Hefei TNJ Chemical Industry Co.,Ltd.
Product Name: D,L-Lactide S Request for quotation
CAS: 95-96-5
Tel: 0086-551-65418684
Email: sales@tnjchem.com
　　　　 info@tnjchem.com
Mobile: 0086 189 4982 3763
QQ: 2881500840 Click to send a QQ message
Wechat: 0086 189 4982 3763
WhatsApp: 0086 189 4982 3763
Product List: View Catalog
Shanghai Yuanye Bio-Technology Co., Ltd.
Multiple SpecificationsSpot supply
Product Name: DL-Lactide Visit Supplier Webpage Request for quotation
CAS: 95-96-5
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409 Click to send a QQ message
Wechat: 18301782025
Suzhou QIHANG Biotechnology Co., Ltd.
Product Name: DL-Lactide Request for quotation
CAS: 95-96-5
Tel: 0512-69386760
Email: 437347250@qq.com
Mobile: 18662190603
QQ: 437347250 Click to send a QQ messageSend QQ message
View History
95-96-5
Downstream Products for 95-96-5
polylactic acid and its copolymer
Potassium lactate
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