All Photos(1)



Melting point standard 121-123°C

analytical standard

Benzoic acid
Linear Formula:
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level


analytical standard

vapor density

4.21 (vs air)

vapor pressure

10 mmHg ( 132 °C)



autoignition temp.

1061 °F

shelf life

limited shelf life, expiry date on the label


249 °C (lit.)


121-123 °C (±0.3°C)
121-125 °C (lit.)

Featured Industry

Food and Beverages



SMILES string




InChI key


Looking for similar products? Visit Product Comparison Guide

General description

Benzoic acid melting point standard, 121-123 °C is useful as a melting point calibration standard while defining the purity of pharmaceutical chemicals. Its melting point value is determined with an average of 6 to 12 measurements using a Büchi B-545 instrument that is calibrated against primary standards.


Melting point standard 121-123 °C, benzoic acid is an analytical standard used to calibrate melting point instruments, in the thermodynamic mode of operation. It is also used in R & D labs for chemical quality control (QC) and quality assurance (QA) to identify solid crystalline substances and to check their purity.

Features and Benefits

  • Melting point calibration standard traceable to primary standards (LGC, London)
  • Grade: Analytical Standard
  • Uncertainty of measurement up to ± 0.3 °C
  • Provided with certificates of analysis and safety data sheet
  • A product of analytical standard grade that meets the QC/QA requirements of melting point analysis


CorrosionHealth hazard

Signal Word


Hazard Statements

Hazard Classifications

Eye Dam. 1 - Skin Irrit. 2 - STOT RE 1 Inhalation

Target Organs


Storage Class Code

6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects



Flash Point(F)

249.8 °F - closed cup

Flash Point(C)

121 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

Pharmaceutical Analysis, 1 (2008)
S Nacht et al.
Journal of the American Academy of Dermatology, 4(1), 31-37 (1981-01-01)
The transepidermal penetration and metabolic disposition of 14C-benzoyl peroxide were assessed in vitro (excised human skin) and in vivo (rhesus monkey). In vitro, the benzoyl peroxide penetrated into the skin, through the stratum corneum or the follicular openings, or both...
G C Tremblay et al.
Pharmacology & therapeutics, 60(1), 63-90 (1993-10-01)
Detoxification of sodium benzoate by elimination as a conjugate with glycine, a nonessential amino acid, provides a pathway for the disposal of waste nitrogen. Since 1979, sodium benzoate has been widely used in the therapeutic regimen to combat ammonia toxicity...
Wanchun Xiang et al.
ChemSusChem, 6(2), 256-260 (2013-01-25)
Sensing the sun: Incorporation of a cyanomethyl benzoic acid electron acceptor into donor-π-acceptor sensitizers for dye-sensitized-solar cell is shown to lead to devices with improved conversion efficiency when compared with more widely used cyanoacetic acid acceptor.
Michelle G Rooks et al.
The ISME journal, 8(7), 1403-1417 (2014-02-07)
Dysregulated immune responses to gut microbes are central to inflammatory bowel disease (IBD), and gut microbial activity can fuel chronic inflammation. Examining how IBD-directed therapies influence gut microbiomes may identify microbial community features integral to mitigating disease and maintaining health....


HPLC Analysis of Benzoic Acid and Sorbic Acid on Ascentis® Express RP-Amide ("Green" Mobile Phase Conditions)

HPLC Analysis of Benzoic Acid and Sorbic Acid on Ascentis® Express RP-Amide ("Green" Mobile Phase Conditions)

HPLC Analysis of Pain Relievers on Ascentis® Express C18

Separation of Acetaminophen, meets USP testing specifications, 98.0-102.0%, powder; Caffeine, meets USP testing specifications, anhydrous; Benzoic acid, meets USP testing specifications; Aspirin, meets USP testing specifications


HPLC Analysis of Benzoic Acid and Related Compounds on Ascentis® RP-Amide

Separation of 4-Hydroxybenzoic acid; Acetylsalicylic acid; Benzoic acid; Salicylic acid; Ethyl 4-hydroxybenzoate

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