All Photos(1)



Phenol solution

Equilibrated with 10 mM Tris HCl, pH 8.0, 1 mM EDTA, BioReagent, for molecular biology

Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level


for molecular biology

product line



≥99.0% (GC)




7.7-8.1 (25 °C)

storage temp.


SMILES string




InChI key


Gene Information

human ... GABRA1(2554)

Looking for similar products? Visit Product Comparison Guide

General description

A tris-equilabrated phenol solution is a clear liquid capped with a layer of Tris buffer. Phenol solutions can be used for a wide variety of molecular biology applications, including nucleic acid extractions using standard phenol-chloroform protocols.


100, 400 mL in glass bottle


  • 1 bottle Tris-equilabrated Phenol (product number P4557)
  • Equilibration Buffer (product B5658)

Signal Word


Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Chronic 2 - Eye Dam. 1 - Muta. 2 - Skin Corr. 1B - STOT RE 2

Storage Class Code

6.1A - Combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. What is the molarity of Phenol solution, Product P4557?

    The Molarity is ~10.6.  The density of the phenol is 1.05g/ml, and the molecular weight is 94.11.

  4. I see that there are two layers in the bottle Phenol solution, Product P4557. Which layer do I use?

    The top phase is Tris buffer, so use the lower/bottom phase.

  5. What do I do to equilibrate the Phenol solution, Product P4557, to around pH 8?

    This phenol solution (Product No. P4557) includes a separate bottle of equilibration buffer (Product No. B5658) to adjust the phenol phase to pH 7.9±0.2. After addition of the buffer to the phenol, it may take about 6 hours (mixture can be kept at 2-8 °C) until the bottom phase (phenol) becomes clear. Some of the haziness in the phenol phase may be due to some air bubbles caused by mixing by inversion. There could be a hazy interface between the phenol and aqueous phase which remains after the separation.  The entire contents of the bottle of the buffer should be added to the phenol. If buffering less than the complete bottle, use at a ratio of 6.5 mL buffer to 100 mL phenol. For 10 mL of phenol, use 650 μL of buffer. For 1 mL of phenol, use 65 μL of buffer.

  6. What is the final pH of Phenol solution, Product P4557, after adding the buffer?

    The pH is typically 8.0; the specifications state a range of 7.7-8.1.

  7. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

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

    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. 

  9. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Debby Bogaert et al.
PloS one, 6(2), e17035-e17035 (2011-03-10)
The nasopharynx is the ecological niche for many commensal bacteria and for potential respiratory or invasive pathogens like Streptococcus pneumoniae, Haemophilus influenzae, and Neisseria meningitidis. Disturbance of a balanced nasopharyngeal (NP) microbiome might be involved in the onset of symptomatic
Tim J Bull et al.
Journal of clinical microbiology, 41(7), 2915-2923 (2003-07-05)
Mycobacterium avium subsp. paratuberculosis is a robust and phenotypically versatile pathogen which causes chronic inflammation of the intestine in many species, including primates. M. avium subsp. paratuberculosis infection is widespread in domestic livestock and is present in retail pasteurized cows'
Michael B Powner et al.
Nature protocols, 7(6), 1086-1096 (2012-05-12)
The mouse retinal vasculature provides a powerful model system for studying development and pathologies of the vasculature. Because it forms as a two-dimensional flat plexus, it is easily imaged in its entirety in whole-mount retinal preparations. In order to study
Thitiporn Anunthawan et al.
Biochimica et biophysica acta, 1848(6), 1352-1358 (2015-03-15)
We investigated the mechanisms of two tryptophan-rich antibacterial peptides (KT2 and RT2) obtained in a previous optimization screen for increased killing of both Gram-negative and Gram-positive bacteria pathogens. At their minimal inhibitory concentrations (MICs), these peptides completely killed cells of
Mark J Lee et al.
PLoS pathogens, 11(10), e1005187-e1005187 (2015-10-23)
Of the over 250 Aspergillus species, Aspergillus fumigatus accounts for up to 80% of invasive human infections. A. fumigatus produces galactosaminogalactan (GAG), an exopolysaccharide composed of galactose and N-acetyl-galactosamine (GalNAc) that mediates adherence and is required for full virulence. Less

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service