Propylparaben
- CAS No.
- 94-13-3
- Chemical Name:
- Propylparaben
- Synonyms
- Propyl parahydroxybenzoate;Parabens;PROPYL 4-HYDROXYBENZOATE;Nipazol;PROPYL P-HYDROXYBENZOATE;Nipasol;Nipasol M;4-HYDROXYBENZOIC ACID PROPYL ESTER;PROPYLPARABENE;Propyl parahydroxybenzoate CRS
- CBNumber:
- CB0176673
- Molecular Formula:
- C10H12O3
- Molecular Weight:
- 180.2
- MOL File:
- 94-13-3.mol
- MSDS File:
- SDS
- Modify Date:
- 2025/1/27 9:38:02
| Melting point | 95-98 °C(lit.) |
|---|---|
| Boiling point | 133°C |
| Density | 1.0630 |
| vapor pressure | 0.67 hPa (122 °C) |
| refractive index | 1.5050 |
| FEMA | 2951 | PROPYL P-HYDROXYBENZOATE |
| Flash point | 180°(356°F) |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | ethanol: soluble0.1M, clear, colorless |
| pka | pKa 8.4 (Uncertain) |
| form | Crystalline Powder |
| Specific Gravity | 0.789 (20/4℃) |
| color | White |
| PH | 6-7 (H2O, 20°C) (saturated solution) |
| Odor | at 100.00 %. sweet smoky burnt woody hawthorn |
| Odor Type | smoky |
| biological source | synthetic |
| Water Solubility | <0.1 g/100 mL at 12 ºC |
| Merck | 14,7866 |
| BRN | 1103245 |
| Stability | Stable. Incompatible with strong oxidizing agents, strong bases. |
| InChIKey | QELSKZZBTMNZEB-UHFFFAOYSA-N |
| LogP | 2.8 at 20℃ |
| CAS DataBase Reference | 94-13-3(CAS DataBase Reference) |
| NIST Chemistry Reference | N-propyl-p-hydroxy-benzoate(94-13-3) |
| EPA Substance Registry System | Propylparaben (94-13-3) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H315-H319-H317 | |||||||||
| Precautionary statements | P501-P261-P272-P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P333+P313 | |||||||||
| Hazard Codes | Xi | |||||||||
| Risk Statements | 36/37/38 | |||||||||
| Safety Statements | 26-24/25-36 | |||||||||
| WGK Germany | 1 | |||||||||
| RTECS | DH2800000 | |||||||||
| Autoignition Temperature | >600 °C | |||||||||
| TSCA | Yes | |||||||||
| HS Code | 29182930 | |||||||||
| Hazardous Substances Data | 94-13-3(Hazardous Substances Data) | |||||||||
| Toxicity | LD50 orally in Rabbit: > 5000 mg/kg | |||||||||
| NFPA 704 |
|
Propylparaben price More Price(20)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | PHR1010 | Propylparaben Pharmaceutical Secondary Standard; Certified Reference Material | 94-13-3 | 1G | ₹7934.73 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | PHR1010 | Propylparaben Pharmaceutical Secondary Standard; Certified Reference Material | 94-13-3 | 10G | ₹49600.15 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | P5835 | Propyl 4-hydroxybenzoate BioXtra | 94-13-3 | 100G | ₹6787.28 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | P5835 | Propyl 4-hydroxybenzoate BioXtra | 94-13-3 | 500G | ₹11409.55 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | P53357 | Propyl 4-hydroxybenzoate ≥99% | 94-13-3 | 5G | ₹2045.93 | 2022-06-14 | Buy |
Propylparaben Chemical Properties,Uses,Production
Chemical Properties
Propylparaben occurs as a white, crystalline, odorless, and tasteless powder.
Uses
propylparaben is one of the most frequently used preservatives against bacteria and mold. It has a low sensitizing and low toxicity factor, is reputed to be very safe, and considered to be a noncomedogenic raw material.
Preparation
Produced by esterfying p-hydroxybenzoic acid with n-propanol, using an acid catalyst such as sulfuric acid and an excess of propanol. The materials are heated in a glass-lined reactor under reflux. The acid is then neutralized with caustic soda and the product is crystallized by cooling. The crystallized product is centrifuged, washed, dried under vacuum, milled and blended, all in corrosion-resistant equipment to avoid metallic contamination.
Production Methods
Propylparaben is prepared by the esterification of p-hydroxybenzoic acid with n-propanol.
Definition
ChEBI: The benzoate ester that is the propyl ester of 4-hydroxybenzoic acid. Preservative typically found in many water-based cosmetics, such as creams, lotions, shampoos and bath products. Also used as a food additive.
General Description
Colorless crystals or white powder or chunky white solid. Melting point 95-98°C. Odorless or faint aromatic odor. Low toxicity, Tasteless (numbs the tongue). pH: 6.5-7.0 (slightly acidic) in solution.
Air & Water Reactions
Water soluble [Hawley].
Reactivity Profile
Maximum stability of Propylparaben occurs at a pH of 4 to 5. Incompatible with alkalis and iron salts. Also incompatible with strong oxidizing agents and strong acids .
Fire Hazard
Flash point data for Propylparaben are not available; however, Propylparaben is probably combustible.
Pharmaceutical Applications
Propylparaben is widely used as an antimicrobial preservative in
cosmetics, food products, and pharmaceutical formulations.
It may be used alone, in combination with other paraben esters,
or with other antimicrobial agents. It is one of the most frequently
used preservatives in cosmetics.
The parabens are effective over a wide pH range and have a
broad spectrum of antimicrobial activity, although they are most
effective against yeasts and molds.
Owing to the poor solubility of the parabens, the paraben salts,
particularly the sodium salt, are frequently used in formulations.
This may cause the pH of poorly buffered formulations to become
more alkaline.
Propylparaben (0.02% w/v) together with methylparaben
(0.18% w/v) has been used for the preservation of various
parenteral pharmaceutical formulations.
Contact allergens
This substance is one of the parabens family. Parabens are esters formed by p-hydroxybenzoic acid and an alcohol. They are largely used as biocides in cosmetics and toiletries, medicaments, or food. They have synergistic power with other biocides. Parabens can induce allergic contact dermatitis, mainly in chronic dermatitis and wounded skin.
Safety
Propylparaben and other parabens are widely used as antimicrobial
preservatives in cosmetics, food products, and oral and topical
pharmaceutical formulations.
Propylparaben and methylparaben have been used as preservatives
in injections and ophthalmic preparations; however, they are
now generally regarded as being unsuitable for these types of
formulations owing to the irritant potential of the parabens.
Systemically, no adverse reactions to parabens have been
reported, although they have been associated with hypersensitivity
reactions. The WHO has set an estimated acceptable total daily
intake for methyl, ethyl, and propyl parabens at up to 10 mg/kg
body-weight.
LD50 (mouse, IP): 0.2 g/kg
LD50 (mouse, oral): 6.33 g/kg
LD50 (mouse, SC): 1.65 g/kg
storage
Aqueous propylparaben solutions at pH 3–6 can be sterilized by autoclaving, without decomposition.At pH 3–6, aqueous solutions are stable (less than 10% decomposition) for up to about 4 years at room temperature, while solutions at pH 8 or above are subject to rapid hydrolysis (10% or more after about 60 days at room temperature).
Incompatibilities
The antimicrobial activity of propylparaben is reduced considerably
in the presence of nonionic surfactants as a result of micellization.
Absorption of propylparaben by plastics has been reported, with
the amount absorbed dependent upon the type of plastic and the
vehicle. Magnesium aluminum silicate, magnesium trisilicate,
yellow iron oxide, and ultramarine blue have also been reported to
absorb propylparaben, thereby reducing preservative efficacy.
Propylparaben is discolored in the presence of iron and is subject
to hydrolysis by weak alkalis and strong acids.
Regulatory Status
Propylparaben and methylparaben are affirmed GRAS direct food
substances in the USA at levels up to 0.1%. All esters except the
benzyl ester are allowed for injection in Japan.
In cosmetics, the EU and Brazil allow use of each paraben at
0.4%, but the total of all parabens may not exceed 0.8%. The upper
limit in Japan is 1.0%.
Accepted as a food additive in Europe. Included in the FDA
Inactive Ingredients Database (IM, IV, and SC injections; inhalations;
ophthalmic preparations; oral capsules, solutions, suspensions,
and tablets; otic, rectal, topical, and vaginal preparations).
Included in parenteral and nonparenteral medicines licensed in the
UK. Included in the Canadian List of Acceptable Non-medicinal
Ingredients.
Propylparaben Preparation Products And Raw materials
Raw materials
1of2
chevron_rightPreparation Products
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| GLR Innovations | +91 9891111994 | New Delhi, India | 4535 | 58 | Inquiry |
| SYNOVA CHEMICALS | +91-9920741772 +91-9920741772 | Mumbai, India | 428 | 58 | Inquiry |
| HJ AROCHEM | +91-8690768060 +91-9724420086 | Ahmedabad, India | 171 | 58 | Inquiry |
| Shreenath Chemicals | +91-8369634120 +91-8369634120 | Maharashtra, India | 48 | 58 | Inquiry |
| KARPSCHEM LABORATORIES | +91-7249203006 +91-7249203006 | Maharashtra, India | 786 | 58 | Inquiry |
| Murli Krishna Exports Pvt Ltd | +91-2225631595 +91-2225631594 | New Delhi, India | 185 | 58 | Inquiry |
| Kenoor Organics Private Limited | +91-7227026011 +91-7227026012 | Gujarat, India | 29 | 58 | Inquiry |
| Unicorn Petroleum Industries Private Limited | +91-2225299990 +91-9930731710 | Maharashtra, India | 22 | 58 | Inquiry |
| Salicylates and Chemicals Pvt. Ltd. | +91-8879630551 +91-8898005838 | Maharashtra, India | 61 | 58 | Inquiry |
| Mruchem | +91-8087147166 +91-8087147166 | Gujarat, India | 52 | 58 | Inquiry |
| Supplier | Advantage |
|---|---|
| GLR Innovations | 58 |
| SYNOVA CHEMICALS | 58 |
| HJ AROCHEM | 58 |
| Shreenath Chemicals | 58 |
| KARPSCHEM LABORATORIES | 58 |
| Murli Krishna Exports Pvt Ltd | 58 |
| Kenoor Organics Private Limited | 58 |
| Unicorn Petroleum Industries Private Limited | 58 |
| Salicylates and Chemicals Pvt. Ltd. | 58 |
| Mruchem | 58 |
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