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
60360
Potassium phthalate monobasic
puriss. p.a., ≥99.5% (T)
Synonym(s):
KHP, Phthalic acid monopotassium salt, Potassium biphthalate, Potassium hydrogen phthalate
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Product Name
Potassium phthalate monobasic, puriss. p.a., ≥99.5% (T)
InChI
1S/C8H6O4.K/c9-7(10)5-3-1-2-4-6(5)8(11)12;/h1-4H,(H,9,10)(H,11,12);/q;+1/p-1
InChI key
IWZKICVEHNUQTL-UHFFFAOYSA-M
SMILES string
[K+].OC(=O)c1ccccc1C([O-])=O
grade
puriss. p.a.
assay
≥99.5% (T)
form
solid
pH
4
mp
295-300 °C (dec.) (lit.)
solubility
water: soluble (93 g/l at 30 °C (86 °F))
anion traces
chloride (Cl-): ≤20 mg/kg
sulfate (SO42-): ≤50 mg/kg
cation traces
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Na: ≤100 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg
functional group
carboxylic acid
Quality Level
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Related Categories
1 of 4
This Item | 60357 | 14659 | 179922 |
|---|---|---|---|
| form solid | form - | form - | form crystals |
| assay ≥99.5% (T) | assay >99.5% | assay - | assay 99.95-100.05% dry basis |
| Quality Level 200 | Quality Level 100 | Quality Level 300 | Quality Level 200 |
| grade puriss. p.a. | grade - | grade - | grade - |
| mp 295-300 °C (dec.) (lit.) | mp 295-300 °C (dec.) (lit.) | mp 295-300 °C (dec.) (lit.) | mp 295-300 °C (dec.) (lit.) |
| pH 4 | pH 4 | pH 4 | pH 4.00-4.02 (25.0 °C±0.2 °C, 0.05 M) |
Application
General description
Storage Class
11 - Combustible Solids
wgk
WGK 1
flash_point_f
387.1 °F - Pensky-Martens closed cup
flash_point_c
197.3 °C - Pensky-Martens closed cup
ppe
Eyeshields, Gloves, type N95 (US)
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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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