Chemical Name:4-Hydroxybenzoic acid
Trade Name:p-oxybenzoic acid
Molecular Formula:C7H6O3
Molecular Weight:138.12
CAS No.:99-96-7
Properties:white odorless crystalline powder, easily soluble in hot water and alcohols, aethers and acetone,
slightly soluble in cold water and benzene, insoluble in carbon bisulfide; relative density is 1.46
Use: Can be used as antiseptic, intermediate of dyes, pharmaceuticals; as main material of liquid crystal polymers; as material of pesticide intermediate
Specification
Item Specification
Polymer Grade Technical Grade
Appearance white crystal powder white crystal powder
Purity(on dry base) % 99.6 99.0
Melting Point 214-217 212-216
Odor odorless odorless
Solubility Clear and transparent clear and transparent
Loss on Drying % 0.20 0.50
Color(Pt-Co) 10 40
Ash % 0.02 0.15
Sulfate(SO42-) 0.01 0.05
Chloride(Cl-) % 0.005 0.02
Phe% 0.01 0.10
Salicylic Acid % 0.02 0.10
4-Hydroxyisophthalic Acid(HIPA) ppm 500 /
Insolubles in Metha ppm 50 /
Potassium(K+) ppm 5 /
Sodium (Na+) ppm 5 /
Iron (Fe) ppm 5 /
Ca2++Mg2+ppm 5 /
Supplier: 1. carbon black
2. rubber crumb
3. precipitated silica
4. silica quartz ore purity: 98% available, silica quartz powder/purity: 99.9% available, silica lumps purity: 99% available
5. calcium chloride powder 74% cacl2 92% cacl2 94%
6. magnesium chloride flake
7. sodium meta bisulphite (food grade 94 96%)
8. red onion as per your required size.
9. sodium acetate anhydrous 99% sodium acetate trihydrate crystal 99%
10.pet preform & fiber, bottle, flakes,
11.bopp tapes
12. capsicum or bell pepper, ready to eat foods, ready green paste like ginger, garlic paste Services: We also do logistic work for cif and we have 3rd party facilities like sgs on client chargeable base.
L-Cystine powder, CAS No.56-89-3, formed by the oxidation of two cysteine molecules, a non-essential amino acid. It is used as a component for parenteral and enteral nutrition and the main active ingredient for medications used to treat dermatitis. Cystine along with the amino acid methionine are the amino-acids necessary for wound healing and forming of epithelial tissue. Cystine is known to stimulate the hematopoietic system and promote the formation of white and red blood cells.
As an experienced L-Cystine manufacturer and supplier, we has been supplying and exporting L-Cystine for almost 10 years, please be assured to buy from us. Any inquiries about price and the market trend please feel free to contact us, we will reply you within 1 working day.
Product Description
Categories Amino Acids
Qty in 20 FCL 18000kg
Min Order 500kg
Origin China
Packaging Factory Packaging or Neutral
Certificate ISO, Kosher, Halal, BRC
CAS No. 56-89-3
HS Code 293090
Specification Feed/Food Grade
L-Cystine Specification
Item STANDARD
Specific rotatory power[±] D20 -215 -225
Clarity 98.0%
Ammonium salt[NH4] 0.02%
Chloride[CL] 0.02%
Residue on ignition 0.10%
Sulfate[SO4] 0.02%
Iron salt[Fe] 10 ppm
Heavy metal[Pb] 10 ppm
Arsenic salt 1 ppm
Other amino acid Color layer can not be checked out.
Loss on drying 0.20%
Content 98.5 -101.0%
The primary use of Ammonium Sulphate is as a fertilizer for alkaline soils. In the soil the ammonium ion is released and forms a small amount of acid, lowering the pH balance of the soil, while contributing essential nitrogen for plant growth. The main disadvantage to the use of Ammonium Sulphate is its low nitrogen content relative to Ammonium Nitrate, which elevates transportation costs.
It is also used as an agricultural spray adjuvant for water soluble insecticides, herbicides, and fungicides. There it functions to bind iron and calcium cations that are present in both well water and plant cells. It is particularly effective as an adjuvant for 2,4-D (amine), glyphosate and glufosinate herbicides.
