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A74807

4-Aminophenyl sulfone

97%

Synonym(s):

4,4′-Diaminodiphenyl sulfone, 4,4′-Sulfonyldianiline, Bis(4-aminophenyl) sulfone, DDS, Dapsone

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Size/SKUAvailabilityPrice
100 g

Available to ship TODAY

$64.50
500 g

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$160.00

About This Item

Linear Formula:
(H2NC6H4)2SO2
CAS Number:
Molecular Weight:
248.30
UNSPSC Code:
12162002
NACRES:
NA.23
PubChem Substance ID:
EC Number:
201-248-4
Beilstein/REAXYS Number:
788055
MDL number:

$64.50


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Quality Segment

assay

97%

form

crystals

mp

175-177 °C (lit.)

SMILES string

Nc1ccc(cc1)S(=O)(=O)c2ccc(N)cc2

InChI

1S/C12H12N2O2S/c13-9-1-5-11(6-2-9)17(15,16)12-7-3-10(14)4-8-12/h1-8H,13-14H2

InChI key

MQJKPEGWNLWLTK-UHFFFAOYSA-N

General description

4-aminophenyl sulfone (DDS) is a diamine-based hardener that is used to cure epoxy-based resins.

Application

Tetrafunctional epoxy resins can be blended with DDS and can be thermally cured which can be used in oil field applications. DDS can also be used to cure iron oxide (Fe2O3) layer double hydroxide based epoxy that forms a flame retardant epoxy nanocomposites. It can also be used as a hardener to cure bisphenol A (DGEBA) for use in the fabrication of flame retardant epoxy/clay nanocomposites.

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This Item
1164008D010000046158
Dapsone European Pharmacopoeia (EP) Reference Standard

D0100000

Dapsone

description

97%

description

United States Pharmacopeia (USP) Reference Standard

description

European Pharmacopoeia (EP) Reference Standard

description

VETRANAL®, analytical standard

assay

97%

assay

-

assay

-

assay

-

form

crystals

form

-

form

-

form

-

mp

175-177 °C (lit.)

mp

175-177 °C (lit.)

mp

175-177 °C (lit.)

mp

175-177 °C (lit.)

Quality Level

200

Quality Level

-

Quality Level

-

Quality Level

200


Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 2 - Repr. 1B - STOT RE 2 - STOT SE 2

Target Organs

Blood, Blood,spleen,Liver

Storage Class

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable

PPE (personal protective equipment)

dust mask type N95 (US), Eyeshields, Gloves



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Questions

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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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