Cas no 120-47-8 (Ethylparaben)

Ethylparaben is a stable and cost-effective parabens-based preservative, widely used in cosmetic formulations to prevent microbial growth and extend shelf life. Its effectiveness is due to its ability to inhibit the activity of microorganisms, making it a popular choice for various personal care products requiring antimicrobial protection.
Ethylparaben structure
Ethylparaben structure
Product Name:Ethylparaben
CAS No:120-47-8
MF:C9H10O3
MW:166.173902988434
MDL:MFCD00002353
CID:35959
PubChem ID:8434
Update Time:2025-07-31

Ethylparaben Chemical and Physical Properties

Names and Identifiers

    • Ethyl 4-hydroxybenzoate
    • 4-(ethoxycarbonyl)phenol
    • 4-HYDROXYBENZOIC ACID ETHYL ESTER
    • ethyl butex
    • ETHYLPARABEN
    • ETHYL PARASEPT
    • ETHYL P-HYDROXYBENZOATE
    • p-hydroxybenzoate ethyl ester
    • P-HYDROXYBENZOIC ACID ETHYL ESTER
    • RARECHEM AL BI 0098
    • 4-Carbethoxyphenol
    • 4-hydroxy-benzoicaciethylester
    • Aseptin a
    • Aseptine a
    • Aseptoform E
    • Benzoic acid, 4-hydroxy-, ethyl ester
    • Benzoic acid, p-hydroxy-, ethyl ester
    • Ethyl 4-Hydroxybenzoate [for Biochemical Research]
    • ETHYL-4-HYDROXYBENZOATE(SG)
    • Ethyl-p-hydroxybenzoate
    • 4-hydrodxybenzoic acid ethylester
    • 4-hydroxybenzoic ethyl ester
    • Easeptol
    • ethyl para-hydroxybenzoate
    • Ethyl parahydroxybenzoate
    • Keloform
    • Mycocten
    • napagina
    • nipagina
    • nipazina
    • para-hydroxybenzoic acid ethyl ester
    • Sobrol A
    • solbrola
    • Ethyl Hydroxybenzoate, Nipagin A, Ethylparaban
    • [ "Ethyl 4-hydroxybenzoate" ]
    • Ethyl
    • Of ethyl
    • Solbro A
    • Ethyl paraben
    • Tegosept E
    • Solbrol A
    • Nipazin A
    • Nipagin A
    • Napagin A
    • p-Carbethoxyphenol
    • Mekkings E
    • Bonomold OE
    • Ethyl p-oxybenzoate
    • Carbethoxyphenol
    • Ethyl-4-hydroxybenzoate
    • p-
    • Ethyl Hydroxybenzoate
    • 4-Hydroxybenzoic Acid Ethyl Ester,99%
    • E214
    • p-Oxybenzoesaeureaethylester
    • E-214
    • EPA Pesticide Chemical Code 061202
    • 4-hydroxy benzoic acid ethyl ester
    • Ethyl 4-hydroxybenzoate, SAJ first grade, >=99.0%
    • NCGC00160654-04
    • ETHYL ESTER OF P-HYDROXYBENZOIC ACID
    • 4-Hydroxybenzoic acid, ethyl ester
    • p-Hydroxybenzoic acid, ethyl ester
    • InChI=1/C9H10O3/c1-2-12-9(11)7-3-5-8(10)6-4-7/h3-6,10H,2H2,1H
    • HY-B0934
    • AC-34532
    • SBI-0206674.P002
    • Tox21_300335
    • ETHYLPARABEN [II]
    • NCGC00160654-01
    • NSC-8510
    • METHYL PARAHYDROXYBENZOATE IMPURITY B [EP IMPURITY]
    • EINECS 204-399-4
    • CCG-213682
    • NCGC00160654-02
    • ETHYL PARAHYDROXYBENZOATE [EP MONOGRAPH]
    • NSC-23514
    • ETHYLPARABEN [USP-RS]
    • W-108475
    • NSC755851
    • UNII-14255EXE39
    • p-Oxybenzoesaeureaethylester [German]
    • ETHYL HYDROXYBENZOATE [MART.]
    • D01647
    • Caswell No. 447
    • CHEMBL15841
    • Ethyl parahydroxybenzoate, European Pharmacopoeia (EP) Reference Standard
    • SCHEMBL28368
    • Ethylparaben (NF)
    • E4B
    • Ethyl 4-Hydroxybenzoate,(S)
    • ETHYL HYDROXYBENZOATE [WHO-DD]
    • Tox21_111961
    • SR-05000001552-1
    • Ethyl 4-hydroxyl-benzoate
    • Ethyl chemosept
    • Ethylis hydroxybenzoas
    • Ethyl 4-hydroxybenzoate, ReagentPlus(R), 99%
    • HSDB 938
    • Ethylparaben [NF]
    • DTXCID002528
    • PROPYL HYDROXYBENZOATE IMPURITY C [EP IMPURITY]
    • AKOS000120512
    • BIDD:ER0023
    • Ethyl parahydroxybenzoate (TN)
    • Ethyl 4-hydroxybenzoate, Vetec(TM) reagent grade, 99%
    • Z53833636
    • Ethylester kyseliny p-hydroxybenzoove
    • Ethyl 4-hydroxy-benzoate
    • HMS2091E17
    • NCI60_041866
    • 4-hydroxybenzoic acid-ethyl ester
    • ETHYLPARABEN [MI]
    • BBL012166
    • 4-Hydroxybenzoic acid-ethyl ester 1000 microg/mL in Acetonitrile
    • 4-Hydroxy-benzoic acid ethyl ester
    • NSC 23514
    • Ester etylowykwasu p-hydroksybenzoesowego [Polish]
    • p-Hydroxybenzoic ethyl ester
    • MFCD00002353
    • ETHYLIS HYDROXYBENZOAS [WHO-IP LATIN]
    • EC 204-399-4
    • E0884
    • ethyl-paraben
    • AB00375765_03
    • ETHYL PARAHYDROXYBENZOATE [JAN]
    • H0211
    • s4525
    • EN300-16106
    • NCGC00160654-06
    • Ins no.214
    • F0728-0009
    • NSC23514
    • Ins-214
    • Pharmakon1600-01400151
    • 9001-05-2
    • CHEBI:31575
    • AC-11586
    • CS-4403
    • WLN: QR DVO2
    • BRD-K02464583-001-02-2
    • SR-05000001552
    • 4-10-00-00367 (Beilstein Handbook Reference)
    • W18471
    • Ethyl parahydroxybenzoate (JP17)
    • Q229976
    • NCGC00254462-01
    • Ethylparaben, Pharmaceutical Secondary Standard; Certified Reference Material
    • AS-11988
    • ETHYLPARABEN [HSDB]
    • NCGC00160654-03
    • Ethyl parahydroxybenzoate e214
    • BRD-K02464583-001-01-4
    • BDBM50428380
    • Ester etylowykwasu p-hydroksybenzoesowego
    • Parahydroxybenzoic acid ethyl ester
    • NSC-755851
    • Ethylparaben, INN, USAN
    • STK070911
    • NSC8510
    • DB13628
    • NS00008316
    • DTXSID9022528
    • bmse010255
    • 14255EXE39
    • Ethylester kyseliny p-hydroxybenzoove [Czech]
    • CAS-120-47-8
    • BRN 1101972
    • 120-47-8
    • AI3-30960
    • Nipagina A
    • DA-73229
    • Ethylparaben, United States Pharmacopeia (USP) Reference Standard
    • ETHYL HYDROXYBENZOATE [WHO-IP]
    • ETHYL PARAHYDROXYBENZOATE [EP IMPURITY]
    • Tox21_111961_1
    • ethyl 4-hydroxybenzenecarboxylate
    • Ethylparaben, certified reference material, TraceCERT(R)
    • HY-B0934R
    • AE-646/31213037
    • FE23063
    • Ethylparaben (Standard)
    • 4-Hydroxybenzoic acid ethyl ester;4-(Ethoxycarbonyl)phenol
    • Ethylparaben
    • MDL: MFCD00002353
    • Inchi: 1S/C9H10O3/c1-2-12-9(11)7-3-5-8(10)6-4-7/h3-6,10H,2H2,1H3
    • InChI Key: NUVBSKCKDOMJSU-UHFFFAOYSA-N
    • SMILES: CCOC(C1C=CC(O)=CC=1)=O
    • BRN: 1101972

Computed Properties

  • Exact Mass: 166.06300
  • Monoisotopic Mass: 166.062994177 g/mol
  • Isotope Atom Count: 0
  • Hydrogen Bond Donor Count: 1
  • Hydrogen Bond Acceptor Count: 3
  • Heavy Atom Count: 12
  • Rotatable Bond Count: 3
  • Complexity: 148
  • Covalently-Bonded Unit Count: 1
  • Defined Atom Stereocenter Count: 0
  • Undefined Atom Stereocenter Count : 0
  • Defined Bond Stereocenter Count: 0
  • Undefined Bond Stereocenter Count: 0
  • Surface Charge: 0
  • Tautomer Count: 3
  • XLogP3: 2.5
  • Topological Polar Surface Area: 46.5
  • Molecular Weight: 166.17

Experimental Properties

  • Color/Form: Powder
  • Density: 1.1708 (rough estimate)
  • Melting Point: 114-117?°C (lit.)
  • Boiling Point: 297-298?°C(lit.)
  • Flash Point: 297-298°C
  • Refractive Index: 1.5286 (estimate)
  • Solubility: 0.00 M
  • Water Partition Coefficient: Slightly soluble in water.
  • Stability/Shelf Life: Stable. Combustible. Incompatible with strong oxidizing agents, strong bases.
  • PSA: 46.53000
  • LogP: 1.56890
  • Odor: Odorless
  • Sensitiveness: Sensitive to light
  • Solubility: Soluble in water, the solubility is 0.070% (20 ℃) and 0.075% (25 ℃). It is stable to light and heat and has no hygroscopicity. Slightly soluble in water. Soluble in ethanol and propylene glycol.
  • Merck: 3837
  • Vapor Pressure: 9.29X10-5 mm Hg at 25 °C (est)

Ethylparaben Security Information

Ethylparaben Customs Data

  • HS CODE:2918290000
  • Customs Data:

    China Customs Code:

    2918290000

    Overview:

    2918290000 Other carboxylic acids and anhydrides containing phenolic groups but not other oxy groups\Acyl halide\Peroxides and peroxyacids and their derivatives.Regulatory conditions:AB(Customs clearance form for Inbound Goods,Customs clearance form for outbound goods).VAT:17.0%.Tax refund rate:9.0%.MFN tariff:6.5%.general tariff:30.0%

    Declaration elements:

    Product Name, component content, use to

    Regulatory conditions:

    A.Customs clearance form for Inbound Goods
    B.Customs clearance form for outbound goods

    Inspection and quarantine category:

    R.Sanitary supervision and inspection of imported food
    S.Sanitary supervision and inspection of exported food

    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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Ethylparaben Suppliers

Amadis Chemical Company Limited
Gold Member
Audited Supplier Audited Supplier
(CAS:120-47-8)Ethylparaben
Order Number:A804518
Stock Status:in Stock
Quantity:5kg
Purity:99%
Pricing Information Last Updated:Friday, 30 August 2024 04:42
Price ($):209.0
Suzhou Senfeida Chemical Co., Ltd
Gold Member
Audited Supplier Audited Supplier
(CAS:120-47-8)Ethylparaben
Order Number:sfd11024
Stock Status:in Stock
Quantity:200kg
Purity:99.9%
Pricing Information Last Updated:Friday, 19 July 2024 14:35
Price ($):discuss personally
Tiancheng Chemical (Jiangsu) Co., Ltd
Gold Member
Audited Supplier Audited Supplier
(CAS:120-47-8)Ethylparaben
Order Number:LE545;LE19135;LE5748271
Stock Status:in Stock
Quantity:25KG,200KG,1000KG
Purity:99%
Pricing Information Last Updated:Friday, 20 June 2025 11:39
Price ($):discuss personally

Ethylparaben Spectrogram

1H NMR JEOL CDCl3
1H NMR
13C NMR Varian CDCl3
13C NMR
GC-MS EI-B
GC-MS

Ethylparaben Related Literature

Additional information on Ethylparaben

Ethylparaben (CAS No. 120-47-8): A Comprehensive Guide to Properties, Applications, and Safety

Ethylparaben (CAS No. 120-47-8), also known as ethyl p-hydroxybenzoate, is a widely used paraben ester with significant applications in cosmetics, pharmaceuticals, and food preservation. As consumer awareness grows regarding preservative safety and clean beauty trends, understanding this compound's role becomes increasingly important. This article explores its chemical properties, industrial applications, and addresses common questions about its safety profile.

Chemically, ethylparaben appears as a white crystalline powder with the molecular formula C9H10O3. It exhibits excellent antimicrobial properties, particularly against fungi and gram-positive bacteria, making it valuable for product preservation. Its solubility characteristics (slightly soluble in water, more soluble in alcohol and ether) contribute to its formulation flexibility. Recent studies comparing paraben alternatives continue to highlight its effectiveness at low concentrations (typically 0.1-0.3% in formulations).

In the cosmetics industry, ethylparaben serves as a preservative booster in creams, lotions, and makeup products. Its ability to extend shelf-life while maintaining formulation stability makes it particularly valuable in water-based products. Current beauty industry trends show increasing demand for multifunctional preservatives that combine efficacy with mildness, positioning ethylparaben as a balanced option among paraben derivatives.

The pharmaceutical applications of CAS 120-47-8 include its use in topical medications and some oral suspensions. Its preservative action helps maintain sterility in multi-dose preparations. Recent formulation research explores its synergy with other antimicrobial agents to create broader-spectrum protection systems. Regulatory agencies worldwide, including the FDA and EMA, continue to approve its use within established concentration limits.

Food-grade ethylparaben finds application as a food preservative (E214 in the EU) in certain processed foods and beverages. Its use aligns with the growing need for natural-like preservatives in the clean label movement. While consumer preferences shift toward preservative-free products, food scientists note that certain applications still require reliable microbial protection that compounds like ethylparaben provide.

Regarding safety considerations, numerous studies have evaluated ethylparaben toxicity. Current scientific consensus maintains that it's safe at approved concentrations, though research continues into its metabolic pathways and environmental impact. The compound's estrogenic activity, while significantly weaker than natural estrogens, remains a topic of ongoing study and discussion in cosmetic science circles.

The global market for ethylparaben reflects evolving regulatory landscapes and consumer preferences. Manufacturers are developing paraben blends and alternative systems to address specific market demands. Quality specifications for pharmaceutical-grade ethylparaben typically require ≥99% purity, with strict controls on impurity profiles and heavy metal content.

Storage and handling of ethylparaben powder require standard laboratory precautions. It should be kept in airtight containers away from moisture and strong oxidizers. While not classified as hazardous under normal conditions, proper personal protective equipment (gloves, goggles) is recommended during handling to prevent eye irritation or respiratory discomfort from fine particles.

Environmental studies on ethylparaben degradation show it undergoes relatively rapid biodegradation in wastewater treatment systems. However, its presence in aquatic environments continues to be monitored as part of broader emerging contaminant research. Recent advances in analytical chemistry have improved detection methods for trace levels in environmental samples.

Future research directions for CAS 120-47-8 include exploring its potential in combination preservative systems and developing more sustainable production methods. As the personal care industry evolves, ethylparaben remains a relevant subject in discussions about preservative efficacy versus consumer safety concerns.

Recommended suppliers
Amadis Chemical Company Limited
(CAS:120-47-8)Ethylparaben
A804518
Purity:99%
Quantity:5kg
Price ($):209.0
Email
Suzhou Senfeida Chemical Co., Ltd
(CAS:120-47-8)Ethylparaben
sfd11024
Purity:99.9%
Quantity:200kg
Price ($):Inquiry
Email