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DL-LACTONE CAS N°:79-50-5 - page 19 / 113

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OECD SIDS 1. GENERAL INFORMATION

DL-LACTONE

ID: 79-50-5 DATE: 18.01.2006

Remark:

DSM Nutritional Products corresponds to the former Vitamins and Fine Chemicals Division of F. Hoffmann-La Roche Ltd.

16-AUG-2004

Purity type:

measured for specific batch

Substance type:

organic

Physical status:

solid

Purity:

99.8 - % w/w

Colour:

white

Odour:

charcteristic

1.1.1 General Substance Information

19

      • 1.0.3

        Identity of Recipients

      • 1.0.4

        Details on Category/Template

UNEP PUBLICATIONS

1.1.0 Substance Identification

Result:

Reliability:

Product

RS Pantolactone

Description

DL-Lactone

Item No.

0421758 ((former Roche code))

Lot No.

Bx 226

Specification crystalline mass slightly yellow, white characteristic, faint

  • -

    0.3 to 0.3°

    • 0

      to 0.5%

    • 0

      to 2.0%

98.0 to 100.5%

Manufacturing Date

31-05-2002

Best use before

end 05-2003

----

Characteristic

Result

Appearance

crystalline mass

Colour

white

Spec Rotation

0.0°

(589 nm, 20 °C, C=3 water)

Water

0.04%

Free acid

0.24%

Assay (as dry)

99.8%

IUPAC Name: Smiles Code: Mol. Formula: Mol. Weight:

Remark:

Reliability:

Flag: 16-AUG-2004

Odour

characteristic

2(3H)-Furanone, dihydro-3-dihydroxy-4,4-dimethyl

O1C(=O)C(O)C(C)(C)C1 C6-H10-O3 130.14

dl-Lactone (CAS 79-50-5, deleted CAS 52126-90-6) is a racemic

(1)

valid without restriction

(44)

mixture of D-Pantolactone [(3R)-dihydro-3-hydroxy-4,4-dimethyl-2(3H)-furanone, CAS 599-04-2] and L-Pantolactone [(3S)-dihydro-3-hydroxy-4,4-dimethyl-2(3H)-furanone, CAS

Society

restriction

source

is

maintained

by

the

American

Chemical

without

respectively the Chemical Abstracts Critical study for SIDS endpoint

Services.

5405-40-3].

(1)

valid

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