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Methylparaben 99-76-3 /manufacturer/low price/high quality/in stock
Cas No: 99-76-3
USD $ 14.0-15.0 / Kilogram 1 Kilogram 1-100 Metric Ton/Month Hangzhou Dayangchem Co., Ltd. Contact Supplier
Methyl paraben
Cas No: 99-76-3
USD $ 6.2-6.2 / Kilogram 100 Kilogram 200 Metric Ton/Month Antimex Chemical Limied Contact Supplier
Methyl p-Hydroxybenzoate (Methyl paraben)
Cas No: 99-76-3
No Data 1 Kilogram 1000 Metric Ton/Month Haihang Industry Co.,Ltd. Contact Supplier
Methylparaben
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USD $ 3.0-3.0 / Kilogram 1 Kilogram 1 Metric Ton/Month Nanjing Raymon Biotech Co., Ltd. Contact Supplier
Methylparaben
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No Data No Data No Data Shanghai Rich Chemicals Co., Ltd Contact Supplier
High quality Methyl p-Hydroxybenzoate
Cas No: 99-76-3
USD $ 1.0-1.0 / Kilogram 10 Kilogram 50 Metric Ton/Day Hubei Jusheng Technology Co., Ltd., Contact Supplier
High purity Methyl 4-hydroxybenzoate with high quality and best price cas:99-76-3
Cas No: 99-76-3
USD $ 5.0-25.0 / Kilogram 1 Kilogram 99999 Kilogram/Year Hangzhou Dingyan Chem Co., Ltd Contact Supplier
CAS 99-76-3 low price methyl 4-hydroxybenzo /methyl p-hydroxybenzoate
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USD $ 10.0-20.0 / Kilogram 1 Kilogram 5000 Kilogram/Month Kono Chem Co.,Ltd Contact Supplier
High quality Methylparaben supplier in China
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99-76-3 Usage

Extinguishing agent

Water, carbon dioxide, dry powder, sand.

Chemical properties

White needle crystal; Slightly soluble in water, easily soluble in ethanol, ether, acetone and other organic solvents.

Utilization limitation

FAO/WHO (1984): Jam, jelly, 1000mg/kg (single or with benzoate, sorbic acid and potassium sorbate).
EEC(1990,mg/kg): For use in pigment solutions, flavor syrups, coffee extracts, frozen drinks, fruit, glucose and soft drinks, pickled fish, salad, sauce, snack food, concentrated soup and so on, limited to GMP; Beer 70; Snack cereals and soup concentrate 175, the same as "07018 p-hydroxybenzoate".
HACSG is listed as a restricted list.
FDA,§184.1490(2000):0.1%.

Flammability hazard characteristics

Combustible, excretes spicy smoke from fireground

Category

Toxic Chemicals

Content analysis

Method one: determinate according to the content analysis method in "butyl p-hydroxybenzoate (07002)". Per mL 1 mol/L sodium hydroxide is equivalent to the product (C8H8O3) 152.2mg.
Method two: Take 0.1 g (accurate to 1 mg) of the sample previously dried on silica gel for 5 h and move into a 300 ml flask with a glass plug. Plus l mol/L sodium hydroxide 10ml, heated in the water bath for 15min. After cooling, add 0.1mol/L potassium bromate 0.00ml, potassium bromide 5.0g and l mol/L hydrochloric acid 30ml. Put 15min in the dark room after sealing. Add potassium iodide 1 g, shake the flask vigorously, with 0.1mol/L sodium thiosulfate titration, with starch test solution (TS-235) as an indicator. Per ml 0.1mol/L potassium bromate is equivalent to the product (C8H8O3) 25.36mg.

Uses

It is used as preservative in foods, beverages and cosmetics.

Chemical Properties

white crystalline powder

Storage

Ventilated , low temperature and dry warehouse.

Acute toxicity

Abdomen-mouse LD50: 960 mg/kg

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.

Toxic grading

Moderate toxicity

Purification Methods

Fractionally crystallise the ester from its melt, and recrystallise it from *benzene, then from *benzene/MeOH and dry it over CaCl2 in a vacuum desiccator. [Beilstein 10 IV 360.]

Preparation

The drug is esterified with p-hydroxybenzoic acid and methanol. The p-hydroxybenzoic acid was added to excess methanol to dissolve, stirring and adding concentrated sulfuric acid slowly. After heating and refluxing 10h, pour into the water to precipitate crystallization, then washed with water, sodium carbonate solution and water, finally obtain the crude product. Recrystallize from water or 25% ethanol to obtain finished product. The yield was 85%. Raw material consumption (kg/t): p-hydroxybenzoic acid 1200, methanol 1000.

Uses

As preservative in foods, beverages and cosmetics.

Definition

ChEBI: A 4-hydroxybenzoate ester resulting from the formal condensation of the carboxy group of 4-hydroxybenzoic acid with methanol. It is the most frequently used antimicrobial preservative in cosmetics. It occurs naturally in several fruits, particularly in blu berries.

Toxicity

ADI 0~10mg/kg(FAO/WHO,2001).
GRAS(FDA,§184.1490,2000).
LD503000mg/kg(Dog, mouth)

Application

  • Antioxidants.
  • Antimicrobial agents for medicine and organic synthesis.
  • Anti-mildew in food, cosmetics and pharmaceutical industries.
  • As a preservative antiseptic agents in the pharmaceutical industry, also for organic synthesis and food, spices, film and other preservative additives.
  • Similar products produced by similar production methods, like ethyl p-hydroxybenzoate (paraben B) and propyl p-hydroxybenzoate (Nepalese c), are also disinfectant preservatives.The products are irritating to the skin.
InChI:InChI=1/C8H8O3/c1-5-4-6(9)2-3-7(5)8(10)11/h2-4,9H,1H3,(H,10,11)/p-1

99-76-3 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
Sigma-Aldrich (M8911)  Methyl4-hydroxybenzoate  analytical standard 99-76-3 M8911-5VL 4,998.24CNY Detail
Sigma-Aldrich (M8911)  Methyl4-hydroxybenzoate  analytical standard 99-76-3 M8911-1VL 1,350.18CNY Detail
USP (1432005)  Methylparaben  United States Pharmacopeia (USP) Reference Standard 99-76-3 1432005-125MG 3,720.60CNY Detail
Sigma-Aldrich (M1650000)  Methylparahydroxybenzoate  European Pharmacopoeia (EP) Reference Standard 99-76-3 M1650000 1,880.19CNY Detail
Sigma-Aldrich (PHR1012)  Methylparaben  pharmaceutical secondary standard; traceable to USP and PhEur 99-76-3 PHR1012-10G 4,312.04CNY Detail
Sigma-Aldrich (PHR1012)  Methylparaben  pharmaceutical secondary standard; traceable to USP and PhEur 99-76-3 PHR1012-1G 732.19CNY Detail
Supelco (47889)  MethylParaben  analytical standard 99-76-3 000000000000047889 208.26CNY Detail
TCI America (H0216)  Methyl 4-Hydroxybenzoate  >99.0%(HPLC)(T) 99-76-3 500g 515.00CNY Detail
TCI America (H0216)  Methyl 4-Hydroxybenzoate  >99.0%(HPLC)(T) 99-76-3 25g 150.00CNY Detail

99-76-3SDS

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 methylparaben

1.2 Other means of identification

Product number -
Other names methyl 4-hydroxybenzoate

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Food additives
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:99-76-3 SDS

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