4-Hydroxybenzoic acid

Modify Date: 2025-08-20 01:28:44

4-Hydroxybenzoic acid structure	Common Name	4-Hydroxybenzoic acid
	CAS Number	99-96-7	Molecular Weight	138.121
	Density	1.4±0.1 g/cm3	Boiling Point	336.2±25.0 °C at 760 mmHg
	Molecular Formula	C₇H₆O₃	Melting Point	213-217 °C(lit.)
	MSDS	Chinese USA	Flash Point	171.3±19.7 °C
	Symbol	GHS07	Signal Word	Warning

Use of 4-Hydroxybenzoic acid

4-Hydroxybenzoic acid, a phenolic derivative of benzoic acid, could inhibit most gram-positive and some gram-negative bacteria, with an IC50 of 160 μg/mL.

Name	4-hydroxybenzoic acid
Synonym	More Synonyms

Description	4-Hydroxybenzoic acid, a phenolic derivative of benzoic acid, could inhibit most gram-positive and some gram-negative bacteria, with an IC50 of 160 μg/mL.
Related Catalog	Signaling Pathways >> Anti-infection >> Bacterial Natural Products >> Phenylpropanoids Research Areas >> Infection
Target	Human Endogenous Metabolite Bacteria:160 μg/mL (IC50)
In Vitro	Most of the gram-positive and some gram-negative bacteria are sensitive to trans 4-Hydroxycinnamic acid (4-HBA) and 4-Hydroxybenzoic acid at IC50 concentrations of 100-170 and 160 μg/mL, respectively. The antimicrobial activities of 4-Hydroxycinnamic acid and t4-HCA against 11 food pathogenic bacteria, 6 plant pathogenic bacteria, 2 yeasts and 15 plant pathogenic fungi are tested by the paper disc method. These compounds inhibit the growth of most of the bacteria and yeasts at concentrations of 200-400 μg. However, the inhibition is more effective against most of the gram-positive bacteria. When tested by the paper disc method, 4-Hydroxycinnamic acid has stronger antimicrobial activity than t4-HCA against S. aureus, L. mesenteroides, S. cerevisiae and C. albicans at a concentration of 50 μg. However, no inhibitory effect against fungi was observed at concentrations even up to 1000 μg[1].
References	[1]. Cho JY, Antimicrobial activity of 4-hydroxybenzoic acid and trans 4-hydroxycinnamic acid isolated and identified from rice hull. Biosci Biotechnol Biochem. 1998 Nov;62(11):2273-6.

Density	1.4±0.1 g/cm3
Boiling Point	336.2±25.0 °C at 760 mmHg
Melting Point	213-217 °C(lit.)
Molecular Formula	C₇H₆O₃
Molecular Weight	138.121
Flash Point	171.3±19.7 °C
Exact Mass	138.031693
PSA	57.53000
LogP	1.42
Vapour Pressure	0.0±0.8 mmHg at 25°C
Index of Refraction	1.616
Storage condition	Refrigerator
Water Solubility	5 g/L (20 ºC)

4-Hydroxybenzoic acid MSDS(Chinese)

CHEMICAL IDENTIFICATION

RTECS NUMBER :: DH1925000

CHEMICAL NAME :: Benzoic acid, p-hydroxy-

CAS REGISTRY NUMBER :: 99-96-7

LAST UPDATED :: 199710

DATA ITEMS CITED :: 12

MOLECULAR FORMULA :: C7-H6-O3

MOLECULAR WEIGHT :: 138.13

WISWESSER LINE NOTATION :: QVR DQ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >10 gm/kg

TOXIC EFFECTS :: Behavioral - muscle weakness Lungs, Thorax, or Respiration - dyspnea

REFERENCE :: GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1-36, 1957-1992. For publisher information, see MTPEEI Volume(issue)/page/year: 28(7),53,1984

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 340 mg/kg

TOXIC EFFECTS :: Behavioral - muscle weakness

REFERENCE :: GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 51(1),85,1986

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 2200 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: DRSTAT Drug Standards. (Washington, DC) V.19-28, 1951-60. For publisher information, see JPMSAE. Volume(issue)/page/year: 20,89,1952

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 210 mg/kg

TOXIC EFFECTS :: Peripheral Nerve and Sensation - flaccid paralysis without anesthesia (usually neuromuscular blockage) Behavioral - somnolence (general depressed activity) Behavioral - ataxia

REFERENCE :: JAPMA8 Journal of the American Pharmaceutical Association, Scientific Edition. (Washington, DC) V.29-49, 1940-60. For publisher information, see JPMSAE. Volume(issue)/page/year: 45,260,1956

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 1050 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: AIPTAK Archives Internationales de Pharmacodynamie et de Therapie. (Heymans Institute of Pharmacology, De Pintelaan 185, B-9000 Ghent, Belgium) V.4- 1898- Volume(issue)/page/year: 128,135,1960 ** OTHER MULTIPLE DOSE TOXICITY DATA **

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 42 gm/kg/6W-I

TOXIC EFFECTS :: Liver - other changes Kidney, Ureter, Bladder - changes in tubules (including acute renal failure, acute tubular necrosis) Nutritional and Gross Metabolic - weight loss or decreased weight gain

REFERENCE :: GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1-36, 1957-1992. For publisher information, see MTPEEI Volume(issue)/page/year: 28(7),53,1984

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 15 gm/kg/30D-I

TOXIC EFFECTS :: Liver - changes in liver weight Kidney, Ureter, Bladder - other changes

REFERENCE :: GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 51(1),85,1986 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 81913 No. of Facilities: 312 (estimated) No. of Industries: 6 No. of Occupations: 11 No. of Employees: 2512 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 81913 No. of Facilities: 41 (estimated) No. of Industries: 2 No. of Occupations: 3 No. of Employees: 2722 (estimated) No. of Female Employees: 1767 (estimated)

Symbol	GHS07
Signal Word	Warning
Hazard Statements	H315-H319-H335
Precautionary Statements	P261-P305 + P351 + P338
Personal Protective Equipment	dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes	Xi:Irritant
Risk Phrases	R36/37/38
Safety Phrases	S26-S37/39-S36
RIDADR	NONH for all modes of transport
WGK Germany	1
RTECS	DH1925000
HS Code	2916399090

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HS Code	2918290000
Summary	HS: 2918290000 other carboxylic acids with phenol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) VAT:17.0% MFN tariff:6.5% General tariff:30.0%

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Food Chem. 194 , 671-9, (2015)

The application of attenuated total reflectance infrared spectroscopy (ATR-IR), Raman spectroscopy (RS) and combination of ATR-IR and RS for measurements of total antioxidant capacity (TAC) and total ...

Arhodomonas sp. strain Seminole and its genetic potential to degrade aromatic compounds under high-salinity conditions.

Appl. Environ. Microbiol. 80(21) , 6664-76, (2014)

Arhodomonas sp. strain Seminole was isolated from a crude oil-impacted brine soil and shown to degrade benzene, toluene, phenol, 4-hydroxybenzoic acid (4-HBA), protocatechuic acid (PCA), and phenylace...

Antagonistic control of a dual-input mammalian gene switch by food additives.

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Synthetic biology has significantly advanced the design of mammalian trigger-inducible transgene-control devices that are able to programme complex cellular behaviour. Fruit-based benzoate derivatives...

4-Hydroxybenzoicacid

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MFCD00002547

EINECS 202-804-9

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China
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4-Hydroxybenzoic acid

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