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
8.21073
4,4′-Diaminodiphenyl sulfone
for synthesis
Synonym(s):
4,4′-Diaminodiphenyl sulfone, DDS, 4,4′-Sulfonyldianiline, Bis(p-aminophenyl) sulfone
Select a Size
| Pack Size | SKU | Availability | Price |
|---|
About This Item
Quality Segment
assay
≥97.0% (HPLC)
form
powder
potency
1000 mg/kg LD50, oral (Rat), >4000 mg/kg LD50, skin (Rabbit)
pH
5.5-7.5 (20 °C in H2O, saturated aqueous solution)
mp
172-175 °C
solubility
0.38 g/L
bulk density
250‑350 kg/m3
storage temp.
2-30°C
SMILES string
[S](=O)(=O)(c2ccc(cc2)N)c1ccc(cc1)N
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
Analysis Note
Melting range (lower value): ≥ 175 °C
Melting range (upper value): ≤ 180 °C
Identity (IR): passes test
1 of 1
This Item | |||
|---|---|---|---|
| assay ≥97.0% (HPLC) | assay 97% | assay - | assay - |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 300 |
| solubility 0.38 g/L | solubility - | solubility - | solubility - |
| form powder | form crystals | form - | form - |
| mp 172-175 °C | mp 175-177 °C (lit.) | mp 175-177 °C (lit.) | mp 175-177 °C (lit.) |
| storage temp. 2-30°C | storage temp. - | storage temp. - | storage temp. 2-30°C |
signalword
Danger
Hazard Classifications
Acute Tox. 4 Oral - Aquatic Chronic 2 - Repr. 1B - STOT RE 2 - STOT SE 2
target_organs
Blood
Storage Class
6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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Global Trade Item Number
| SKU | GTIN |
|---|---|
| 8210730005 | 04022536473260 |
| 8210730250 | 04022536473277 |
| 8210739999 | 04022536473284 |
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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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