Product Description
Product Name: 4-Hydroxybenzoic acid
CAS NO: 99-96-7
Purity: 99.0%min
Appearance: White crystal powder
Application: Intermediate of antiseptics, dyestuff, medicine and injection molding.
Shelf life: 2 Years
4-Hydroxybenzoic acid Specification:
Benzoic acid index |
Items | Index |
Content | 99-100.5% |
Loss on drying | ≤0.5% after drying for three hours over sulphuric acid |
Melting range | 121.5-123.5°C |
PH | About 4 (solution in water) |
Arsenic | ≤3 ppm |
Lead | ≤5 ppm |
Mercury | ≤1 ppm |
Heavy metal (as pb) | ≤10 ppm |
Sulphated ash | ≤0.05% |
Positive sublimation test and test for benzoate | Qualified with regulations |
Readily oxidizable substances | Qualified with regulations |
Polycyclic acid | Pass test |
Chlorinated organic compounds | ≤300 ppm |
Appearance of solution | Clarification, colorless |
Our Certificate
Packing & Shipping
Company Profile
Welcome to Hebei Guanlang Biotechnology Co.Ltd (Guanlang)
Guanlang is a fast growing intermediates company,Which located in Shijiazhuang,Hebei Province.Our main product is chlorine dioxide, Sodium dichloroisocyanurate(sdic or nadcc) ANDTrichloroisocyanuric acid (TCCA)for water treatment.We also supply raw materials for detergent and hand sanitizer products,such as carbopol 940,carbopol stock solution,Hydroxypropyl methyl cellulose (HPMC) and so on.
Guanlang also supply various industrial chemicals for customers, such as citric acid,potassium chloride etc.After ten years development,Crovell has become a Diversified development company,not only involves in chemicals, but also real estate ,agricultural products and so on.So far, Crovell has usiness in more than 35 countries,most big customers come from europe and America, because among the suppliers in China.
Guanlang can always make the product quality best, some of the products from Guanlang can reach the purity of 99.9+, such as 2-phenylacetamide. This is the important reason for customers who choosing Guanlang.In future, Crovell must become to a more important trade bridge for china and foreign countries especially in pharmaceutical industries.
Exhibition
why choose our company
1. quality
our products meet msds safe standard and we have iso and other certificate so yan can get high quality products from our company.
2. price
we are the company which is the joint of trade and industry so we cao provide the competitive price and high quality product.
3.packing
we can do according to the customers' request.
4.transport
ems,dhl, tnt, ups ,fedex, by air, by sea
dhl express, fedex and ems for quantity less than 50kg, usually called as ddu service;
sea shipping for quantity over 500kg; and air shipping is available for 50kg above;
for high value products, please select air shipping and dhl express for safe;
5.service
we offer specialized logistic service including export declaration,customs clearance and every detail during shipment,this makes
us able to offer you one-stop service from the order to the products transported to your hand.
we will try our best to satisfied you.
1. tailor-made for every customers.
2. third-party test for the products you demand.
3. test your counter-samples and produce them for you.
4. best discount for old customers.
