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Propyl p-Hydroxybenzoate
Basic Information
Product Number:SX2004
Chemical name: 4-Hydroxybenzoic acid propyl ester
Product name:Propyl 4-hydroxybenzoate
Molecular formula:C10H12O3
Molecular weight:180.20
CAS No.:94-13-3
EINECS No.: 202-307-7
Physical and chemical properties
Melting point: 95-98 °C(
Boiling point: 133°C
Density : 1.0630g/cm3
Refractivity: 1.5050
FEMA: 2951
Appearance: white crystal.
Solubility: Easily soluble in alcohol and ether, almost insoluble in water.
Relative density is (d4102) 1.0630, refractive index is (nD102)1.5050.
Detailed Description
Quality standard
Item
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Index
|
||
Q/SH 024-2016
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BP
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USP
|
|
Appearance
|
/
|
Colorless crystal or white crystalline powder
|
/
|
Content (dry basis) % ≥
|
99.0-100.5
|
99.0-100.5
|
98.0-102.0
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Melting point ℃
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95-98
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96-99
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96-99
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Acidity
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/
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Qualified
|
Qualified
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Sulfate (SO42-) % ≤
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0.024
|
/
|
/
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Heavy metal (Pb) % ≤
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0.001
|
/
|
/
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Arsenic (AS) % ≤
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0.0001
|
/
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/
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Drying loss % ≤
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0.50
|
/
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0.50
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Residue on ignition % ≤
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0.05
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0.1
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0.1
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Mass fraction of free acid (PHBA)% ≤
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0.55
|
/
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/
|
Identification test
|
/
|
/
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Qualified
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Related substances
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/
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Qualified
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/
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Appearance
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/
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Clear and transparent
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/
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Organic volatile impurities
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/
|
/
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Qualified
|
Application
The product is mainly used as preservative of cosmetics, drugs and feeds. It is also used in feed as antiseptics.
Packing
Plastic bag, 1kg/bag, 20 bags/carton, or cardboard drum lined with plastic bag, net weight is 25kg or 50kg.
*Special requirements can be negotiated
Zhejiang Shengxiao Chemicals Co., Ltd. Was founded in 1987. Quzhou Intel Polymer Materials Co., Ltd. Was founded in 2000. Mainly operating p-hydroxybenzoic acid and nipagin ester products and it's sodium salts, continuously rank fist in Chinese market. In 2004, Shengxiao was approved as Zhejiang High-Tech enterprises.
The annual production capacity of the leading product p- hydroxybenzoic acid has reached 22, 000 tons, and at the same time, our company becomes the largest manufacturer in the world. We drafted National standards about Food Preservative Ethyl Hydroxybenzoate and Propyl Hydroxybenzoate. Ethyl Hydroxybenzoate was recertified Drug Production License and Drug Production Registration Certificate. Parts of our products are made by international standard-BP, USP and GMP and passed the Certification of ISO9001: 2008 international Quality Management System.
Our products are mainly applicable to preservative in foodstuff, drug and cosmetics. We received import and export authority in 1997 and 80% of our products are sold well in more than 30 countries and regions, such as U.S.A, Janpan, Korea, Isreal, Europe and South east Asia and we have long term cooperation with company like Clariant, Dupont,Ticona, Hankook, Polyplastics, Sumsung,etc.
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