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94-13-3 Usage

usage limits

2760--2002 GB (calculate in p-hydroxybenzoic acid; g/kg):
fresh fruit and vegetable 0.012; vinegar 0.10; carbonated beverages 0.20; fruit juice (fruit flavor) type beverages, jam (excluding canned), soy sauces 0.25; pastry stuffing 0.5 (the total amount of single use or mixed use with ethyl 4-hydroxybenzoate); egg yolk filling 0.20.
Another provision that sodium methylparaben is also equivalent application.
FAO/WHO (1984): Jam and jelly, 1000 mg/kg
FDA § 184.1670 (2000): 0.1%.
EEC(1990, mg/kg): Frozen drinks 160; beet pickled vegetables, salad dressings, 250; fragrance, fruit tarts, purees, concentrated soft drinks, 800; Fruit canned, salted fish, 1000.
Japan (calculate in p-hydroxybenzoic acid, g/kg; this product, g):
soy sauce 0.25g/L (this product 0.32); vinegarsoysoy 0.1g/L (This product 0.13); soft drinks and syrup 0.1 (this product 0.13); fruit sauce 0.2 (this product 0.26); fruits and vegetables 0.012 (this product 0.015).

Chemical properties

Propylparaben is a colorless and fine crystalline or white crystalline powder, almost odorless and with slightly astringent.Soluble in ethanol, ethyl ether, acetone and other organic solvents, slightly soluble in water.

Toxicity

Adl  0-10 mg/kg (FAO/WHO, 2001).
LD50  3.7g/kg (mouse, oral).
GRAS  (FDA, § 184.1670, 2000).
HACSG  listed in the restricted list.

content analysis

Same with Method 1 in "Butyl p-hydroxybenzoate (07002)".
In calculation, per mL of 1 mol/L sodium hydroxide corresponds to 180.2mg of this goods (C10Hl2O8).

Uses

An antimicrobial

Production methods

This product can be derived from the esterification of p-hydroxybenzoic acid and n-propanol. First mix p-hydroxybenzoic acid with propanol and heat to dissolve. Then add sulfuric acid slowly and continue to heat for 8h of refluxion. After cooling, pour them into the 4% sodium carbonate solution for precipitation and crystallization. Filtrate and wash to neutral to obtain the crude product. After further ethanol recrystallization, the finished products are obtained. In the preparation, the cation exchange resin can be used in place of the sulfuric acid catalyst.
It can be derived from the esterification of p-hydroxybenzoic acid and n-propanol in the presence of sulfuric acid.
Add p-hydroxybenzoic acid and n-propanol in turn to the esterification reactor, and heat to dissolve. Add concentrated sulfuric acid slowly and heat for 8h of refluxion. Pour the reaction solution into 4% sodium carbonate solution before it is cooled. Constantly stir for precipitation and crystallization. Then the crude product can be obtained after centrifugal filtration and washed to neutral. Finally the finished product is acquired after activated carbon decolorization and ethanol recrystallization. The method of preparing ethyl p-hydroxybenzoate can also be used as a reference.
HOC6H4COOH + C3H7OH [H2SO4] → HOC6H4COOC3H7 + H2O

Air & Water Reactions

Water soluble [Hawley].

Hazards & Safety Information

Category: Toxic substances
Toxicity classification :Moderate toxicity
Acute Toxicity :Celiac-mouse LD50: 200 mg/kg
Flammable hazardous characteristics :Flammable; excrete acrid and pungent smoke from fire
Storage and transport characteristics :Stored in the low-temperature, well-ventilated and dry warehouse
Fire extinguishing agent :water, carbon dioxide, dry powder, sand

Chemical Properties

white crystalline powder

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.

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 .

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.

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.

Uses

Pharmaceutic aid (antifungal). Antimicrobial preservative in foods and cosmetics.

Uses

1. Propylparaben Used as preservatives and antioxidants, and also used in the pharmaceutical industry
2. Used as the antimicrobial preservative in pharmaceuticals and cosmetics
3. According to ethyl p-hydroxybenzoate (17007)
4. Used as antiseptic and antimicrobial.
5. Used as the preservatives of food, cosmetics and medicines.

Fire Hazard

Flash point data for Propylparaben are not available; however, Propylparaben is probably combustible.
InChI:InChI=1/C10H12O3/c1-2-7-13-10(12)8-3-5-9(11)6-4-8/h3-6,11H,2,7H2,1H3

94-13-3 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
USP (1577008)  Propylparaben  United States Pharmacopeia (USP) Reference Standard 94-13-3 1577008-200MG 4,662.45CNY Detail
Sigma-Aldrich (P3650000)  Propyl parahydroxybenzoate  European Pharmacopoeia (EP) Reference Standard 94-13-3 P3650000 1,880.19CNY Detail
Sigma-Aldrich (PHR1010)  Propylparaben  pharmaceutical secondary standard; traceable to USP and PhEur 94-13-3 PHR1010-10G 4,312.04CNY Detail
Sigma-Aldrich (PHR1010)  Propylparaben  pharmaceutical secondary standard; traceable to USP and PhEur 94-13-3 PHR1010-1G 732.19CNY Detail
Alfa Aesar (A10180)  n-Propyl 4-hydroxybenzoate, 99+%    94-13-3 5000g 4706.0CNY Detail
Alfa Aesar (A10180)  n-Propyl 4-hydroxybenzoate, 99+%    94-13-3 1000g 1076.0CNY Detail
Alfa Aesar (A10180)  n-Propyl 4-hydroxybenzoate, 99+%    94-13-3 250g 421.0CNY Detail

94-13-3SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name propylparaben

1.2 Other means of identification

Product number -
Other names Nipazol

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Food Additives: PRESERVATIVE
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:94-13-3 SDS

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