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240141

Sigma-Aldrich

4-Hydroxybenzoic acid

ReagentPlus®, ≥99%

Synonym(s):

4-Carboxyphenol, 4-Hydroxybenzoic acid, Paraben-acid, p-Carboxyphenol, p-Hydroxybenzoic acid, p-Hydroxyl benzoic acid, p-Salicylic acid

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50 G
$37.70

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50 G
$37.70

About This Item

Linear Formula:
HOC6H4CO2H
CAS Number:
Molecular Weight:
138.12
Beilstein/REAXYS Number:
970950
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

$37.70


In StockDetails


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product line

ReagentPlus®

assay

≥99%

form

powder

mp

213-217 °C (lit.)

solubility

water: soluble 125 part(lit.)
acetone: soluble(lit.)
alcohol: freely soluble(lit.)
carbon disulfide: insoluble(lit.)
chloroform: slightly soluble(lit.)
diethyl ether: soluble(lit.)

functional group

carboxylic acid

SMILES string

OC(=O)c1ccc(O)cc1

InChI

1S/C7H6O3/c8-6-3-1-5(2-4-6)7(9)10/h1-4,8H,(H,9,10)

InChI key

FJKROLUGYXJWQN-UHFFFAOYSA-N

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This Item
H20059PHR104892596
assay

≥99%

assay

99%

assay

-

assay

-

solubility

water: soluble 125 part(lit.), alcohol: freely soluble(lit.), chloroform: slightly soluble(lit.), acetone: soluble(lit.), diethyl ether: soluble(lit.), carbon disulfide: insoluble(lit.)

solubility

alcohol: freely soluble

solubility

-

solubility

-

Quality Level

100

Quality Level

200

Quality Level

300

Quality Level

300

form

powder

form

-

form

-

form

-

mp

213-217 °C (lit.)

mp

213-217 °C (lit.)

mp

213-217 °C (lit.)

mp

213-217 °C (lit.)

product line

ReagentPlus®

product line

ReagentPlus®

product line

-

product line

TraceCERT®

General description

4-Hydroxybenzoic acid is an aromatic carboxylic acid commonly used as a building block in various organic reactions, such as in the synthesis of liquid crystals and parabens. It is also utilized in esterification reactions for synthesizing aromatic oligomers. [1] [2]

Application

4-Hydroxybenzoic acid can be used as a reactant to synthesize:
  • Monoesters via esterification with sucrose.
  • Thermotropic liquid crystalline polymers[3].
  • 4-Hydroxybenzaldoxime via one-pot chemoenzymatic method[4].

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

pictograms

CorrosionExclamation mark

signalword

Danger

hcodes

Hazard Classifications

Eye Dam. 1 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves


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Questions

1–6 of 6 Questions  
  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/449/386/product-dating-information-mk.pdf

      Helpful?

  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

      Helpful?

  3. What is the shelf life of Product 240141, 4-Hydroxybenzoic acid?

    1 answer
    1. This information can be found on the product specification sheet for a related product (H20059).

      Helpful?

  4. How can Product 240141, 4-Hydroxybenzoic acid, be dissolved?

    1 answer
    1. According to the chemicals encyclopedia published by the Royal Society of Chemistry, 4-Hydroxybenzoic acid is freely soluble in alcohol, and soluble in about 125 parts water.

      Helpful?

  5. What is the Department of Transportation shipping information for this product?

    1 answer
    1. Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.

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  6. I see that Product 240141, 4-Hydroxybenzoic acid, is deleted. Which product do you offer in its place?

    1 answer
    1. Our best offer item is Product No. H20059.

      Helpful?

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