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
85707
2,5-Dihydroxybenzoic acid
suitable for matrix substance for MALDI-MS, >99.0% (HPLC)
Synonym(s):
2,5-DHBA, DHB, Gentisic acid, Hydroquinonecarboxylic acid
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| Pack Size | SKU | Availability | Price |
|---|
About This Item
Quality Level
assay
>99.0% (HPLC)
form
powder
analyte functional class(es)
polymers
analyte chemical class(es)
glycans, lipids, organic molecules, peptides, proteins
technique(s)
MALDI-MS: suitable
mp
200-207 °C, 204-208 °C (lit.)
cation traces
Ba: ≤5 mg/kg, Ca: ≤5 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, K: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Na: ≤5 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg
ε (extinction coefficient)
>2000 at 337 nm
suitability
suitable for matrix substance for MALDI-MS
SMILES string
OC(=O)c1cc(O)ccc1O
InChI
1S/C7H6O4/c8-4-1-2-6(9)5(3-4)7(10)11/h1-3,8-9H,(H,10,11)
InChI key
WXTMDXOMEHJXQO-UHFFFAOYSA-N
Application
1 of 1
This Item | |||
|---|---|---|---|
| assay >99.0% (HPLC) | assay ≥99.5% (HPLC) | assay ≥99.0% (HPLC) | assay 98% |
| Quality Level 100 | Quality Level 100 | Quality Level 100 | Quality Level 200 |
| form powder | form - | form - | form powder |
| mp 200-207 °C, 204-208 °C (lit.) | mp 203-207 °C, 204-208 °C (lit.) | mp 204-208 °C (lit.) | mp 204-208 °C (lit.) |
| suitability suitable for matrix substance for MALDI-MS | suitability suitable for matrix substance for MALDI-MS | suitability - | suitability - |
| cation traces Ba: ≤5 mg/kg, Cd: ≤5 mg/kg, Cr: ≤5 mg/kg, K: ≤5 mg/kg, Mn: ≤5 mg/kg, Ni: ≤5 mg/kg, Zn: ≤5 mg/kg, Ca: ≤5 mg/kg, Cu: ≤5 mg/kg, Na: ≤5 mg/kg, Co: ≤5 mg/kg, Pb: ≤5 mg/kg, Mg: ≤5 mg/kg | cation traces Al: ≤1 mg/kg, Ba: ≤1 mg/kg, Ca: ≤1 mg/kg, Cd: ≤1 mg/kg, Co: ≤1 mg/kg, Cr: ≤1 mg/kg, Cu: ≤1 mg/kg, Fe: ≤1 mg/kg, K: ≤1 mg/kg, Li: ≤1 mg/kg, Mg: ≤1 mg/kg, Mn: ≤1 mg/kg, Na: ≤1 mg/kg, Ni: ≤1 mg/kg, Pb: ≤1 mg/kg, Sr: ≤1 mg/kg, Zn: ≤1 mg/kg | cation traces - | cation traces - |
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signalword
Warning
hcodes
Hazard Classifications
Acute Tox. 4 Oral
Storage Class
11 - Combustible Solids
wgk
WGK 3
ppe
dust mask type N95 (US), Eyeshields, Gloves
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Related Content
Glycobiology and Glycoproteomics Brochure
Global Trade Item Number
| SKU | GTIN |
|---|---|
| 85707-250MG-F | 04061833027486 |
| 85707-1G-F | 04061833027370 |
| 85707-10MG-F | 04061833027264 |
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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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