China Acid

Chemical name: Dicarboxyl

Product name: Oxalic Acid; Echanediaci Acid

Physiochemical properties: Colorless transparent crystal, Easily soluble in ethanol, soluble in water, slightly soluble in aether, insoluble in benzene or chloroform, toxic and corrosive

Quality standard: GB1626-88

Index name Index

Content(based on H4C2O4. 2H2O)%: 99.6

Sulfate radical(based on SO42-)%: 0.08

Ash content%: 0.08

Heavy metal)based on Pb)%: 0.001

Iron(based on Fe)%: 0.0015

Chloride(based on Cl)%: 0.0003

Use: Oxalic Acid is mainly used in producing bacteriophage, borneol and refining rare metals. Besides, oxalic Acid can be used in synthesizing various kinds of oxamide etc. It can be used in producing cobalt-molybdenum-aluminium catalyst, cleaning metals and marble and bleaching textile.

Packing:

In 25 kgs net Polywoven Bag, inner with PE bag

In 25 kgs net Single Ply Polyethylene Bag, inner with PE bag

In 25 kgs net Kraft Paper Compounded bag inner with PE bag

Holide International co., limitd is engaged from producing to sales and research and development. Our main chemical products are:

Sodium percarbonate(50000mt), Carboxy methyl cellulose(20000mt); Mono potassium persulphate(3000mt), Sodium perborate(40000mt), ammonium persulphate(20000mt)sodium persulphate(10000mt), potassium persulphate(5000mt); Tetra Acetyl Ethylene DiamineTAED(3000MT); Sebacic acid(10000mt); Sodium dichloroisocyanurate(10000mt); Trichloroisocyanuric acid(20000mt); Calcium Hypochlorite(8000MT) BCDMH(2000MT); DSTDP 3000MT; Antioxidant 1010, antioxidant 1076; Tribasic lead sulphate(6000mt); Dibasic lead phosphite; Rare earth compound stablizer; Chlorinated polyethylene(CPE); (PE-III) similar with REOFOS10000MT; Accelerator MBT, accelerator MBTS, accelerator CBS; Accelertor TMTD, total 40000mt; Lead stearate(8000mt) Ferrocene(2000mt); DSD ACID(3000MT).

CALCIUM HYPOPHOSPHITE HYPOPHOSPHOROUS ACID Tetrakis(hydroxymethyl)phosphonium chloride(THPC) Tetrakis(hydroxymthyl)phosphonium chloride-urea(THPC-UREA) Tetrakis(hydroxymethyl)phosphonium sulphate(THPS).

If you need the product specifications please kindly inform us, we will e-mail or fax to you. Welcome to contact us.

Derivatives of squaric acid have a resonance structure which presents an electrostatic mimic for the phosphate group. Squaric acid and its derivatives are used as a replacement for phosphate

Diester linkages in an oligodeoxynucleotide and phosphates in peptide-based ligands. Squaric acids are used to synthesize inhibitors of protein tyrosine phosphatases in medicinal chemistry. It is used

In the synthesis of photosensitive squaraine dyes.

CAS NO.: 2892-51-5

EINECS NO.: 220-761-4

FORMULA: (HO)2C4(=O)2

MOL WT.: 114. 06

SYNONYMS: 3, 4-Dihydroxy-3-cyclobutene-1, 2-dione;

Dihydroxy Cyclobutenedione; Quadratic acid; 1, 2-Dihydroxycyclobutene-3, 4-dione; 1, 2-Diketo-3, 4-dihydroxycyclobutene; 1, 2-Dihydroxy-3, 4-cyclobutenedione;

APPEARANCE: White crystalline powder

ASSAY: 99. 0% min

We exprot Oxalic Acid in China. Packed In 25 kgs net Polywoven Bag, inner with PE bag. It can be used for:

1)Purifying agent in pharmaceutical industry, special in antibiotic medication, such as Oxytetracycline, Chloramphenicol, etc

2)Precipitating agent in Rare-earth mineral processing

3)Bleaching agent in the textile activities, wood pulp bleaching

4)Rust-remover for Metal treatmen

5)Grinding agent, such as Marble polishing

6)Waste water treatment, removing calcium from water

Synonym: Tannin, Gallotannic acid

Molecular formula and weight: C76H52O46 = 1701.18

CAS registry number: 1401-55-4

HS Code: 32019090

1. Specifications:

Appearance: Ivory, no odour

Ignition residue, %: 1

Tannic acid content %: 96.0

Gum and dextrin experiment: Negative

As mg/kg: 3

Chroma: 1.0

Heavy metal(Pb)mg/kg: 20

Loss on drying %: 10

2. Characteristic: A natural stabilizing agent of beer, it can rapidly react with acidic protein and protein polyphenols to obtain precipitation, and removed at the later of fermentation or during the filtration of beer. It can obviously improve the colloid stability and flavor stability of beer.

3. Dosage and usage

(1) Recommended: 20-40ppm.

(2) Usage: It is added at the later of fermentation to spill from jar or during the filtration of beer, concretely depending on the seethe degree of barley juice, suspending yeast cell counts in ferment-ation solution, the quantity of fermentation solution and the shape of fermentation jar, and etc. Dosage and usage will be confirmed by experiment finally.

(3) Usage: 25% tannin solution is compounded with deoxidized wateror distilled water at room tem-perature Before added, diluted to 1-5% again. Added by quantitative added pump, uniformity degree of solution can reach above 80%.

4. Time of precipitation: The reaction rate of tannin with protein is very fast, time of precipitation depends on its temperature of fermentation solution. Counts of suspending yeast cell and specification of container. It takes 2-4 days to precipitate if added in the later of fermentation solution. It takes notless than 10 minutes to contact during the filtration if it is added on the filter pipeline and takes about20 minutes to precipitate in buffer jar.

5. Five major functions of ChunYuan brewing tannin:

(1) Adsorb selectively and deposit macromolecule basic hydrophobic and sensitive proteins containing sulfur. These unstable macromolecule proteins are the very reason why the beer flavor and colloid are unstable.

(2) Combine with different kinds of metal ions to form depositions. Can remove harmful metal ions in beers, especially Fu++, Cu++, Ni+, which can enhanced oxidation of beers.

(3) Condense with different aldehydes in beers in acid conditions; Reduce content of aldehydes having side-effects on beer flavor and increase stability of beer flavor.

(4) As natural anti-oxidant and remover of oxygen free radicals, contain large quantity of phenol hydrocarbyls, easily be oxidized and have high reduction. Reduce activity of oxygen with high activity; Remove various kinds of oxygen free radicals, cut oxidation reaction chain of free radicals and stop oxidation reaction. Therefore, protect beer from being oxidized.

(5) Have the effect of inhibiting activity of enzyme and restraining bacteria. By combining with enzyme protein, destroy function group of enzyme and make them inactive. And complex with Ca++, Mg++, Mn++-catalyst of enzyme, thus inhibit enzyme. Can inhibit bacteria to minimum 12-100ppm, and yeast to 25000-125000ppm. As far as present dosage is concerned, tannin has certain inhibition to bacteria and has no effect on yeast.

6. Packaging: 25KG/drum.

Jiangsu YaBang Dyestuffs Co., Ltd owns total assets of 0. 183 billion US dollars and annual output capacity of 20, 000 tons. The annual sales turnover is more than 200 million US dollars. Our main products are dyes intermediates, Disperse dyes, Vat dyes, Solvent dyes, Pigments etc

We are manufacturing Bromamine acid. Anthraquinone, 1-amino AQ manufactuer in China. We attach its specification as folllows:

SpecificationItem Specification

Appearance: Red or nacarat crystal or powder

Bromamine acid% e 96. 0

1-Amino anthraquinone-2-sulfonic acid% d0. 2

1-Amino-2, 4 dibromo anthraquinone% d0. 3

Water impurity% d 0. 3

Moisture% d4. 0

Production: 5000MT/Year

If the specification meet your interest, please le t me know. We would like to send you our samples for your referrence. Looking forward to our cooperation very soon!

As the earliest and largest CLA manufacturer in China, Qingdao Auhai Biotech can provide a wide range of high quality CLA products with reasonable price and excellent service.

We can provide the following CLA products:

1. CLA Oil

CLA FFA Oil: 60%-95%

CLA EE Oil: 80%

CLA TG Oil: 80%

2. CLA Powder

CLA Powder with FFA Oil: 20%-50%

CLA Powder with EE OiL: 20%-40%

CLA Powder with TG Oil: 20%-40%

3. Calcium CLA

4. CLA Softgels

CLA Softgls with CLA FFA Oil 80%: 500mg, 750mg, 1000mg

CLA Softgls with CLA EE Oil 80%: 500mg, 750mg, 1000mg

We can also provide OEM service and contract manufacturing.

PHOSPHORIC ACID (T.G.85%)

Formula:H3PO4

MW:98.00

Quality:Colorless syrup liquid.Relative density 1.834(18 ), melting point 42.35.

Dissolve in water and ethanol (CH3CH2OH) easily.

Usage:For making Monoammonium Phosphate, Diammonium Phosphate, Monopotassium phosphate, Disodium Phosphate, Sodium Tripolyphosphate and Sodium Hexametaphosphate, etc.;Also be used in metal surface phosphating, compounding electrolytic polishing liquid and chemical polishing liquid.

Index:Color Klett, <30

Phosphoric acid(H3PO4), % e85.00

Package:35kg in plastic drum.

PHOSPHORIC ACID (FOOD GRADE)

MW:98.00

Usage:Acidity agent for acidic drinking liquid, acidity is 7-8 times that for citric acid, for making many kinds of food grade phosphate, such as Tribasic sodium phosphate, Tribasic potassium phosphate, Triammonium phosphate, Calcium phosphate, Sodium aluminum phosphate, ferric phosphate, magnesium phosphate, etc.

Index:Color Klett, <20

Phosphoric acid (H3PO4), % e85.00

Package:35kg in plastic drum.

A white crystal powder, granular, or tablet, having a pungent smell of hypochlorous acid, when meets acid-base, it resolves and when it meets reducer and part of organism, it reacts actively, with solubility in water of 1. 2g/100g

Standards: The product are complied with HG/T3263-2001

Available chlorine: 90%min;

Moisture: 0.5%max;

PH(1% solution): 2 7-3.3.

Specification:

Powder

Granular: 830 mesh; 2040 mesh

Tablet: 200g; 160g; 500g

Packing:

25kg/barrel, 50kg/barrel with plastic bag in it, or according to clients' requirements

Molecular Formula: HBF4

Relative Molecular Weight: 87.83

Properties: Colorless transparent liquid, strong acid which can only exist in aqueous solution. Technical product is generally solution containing 42 to 48%. 42% solution's relative density is 1.32, and that of 48% solution is 1.37. Fluoroboric acid is stable in concentrated solution and will begain to decompose if heated to 130. It can mixedly solve with water or alcohol. In aqueous solution it will slowlly decompose to HBF3OH; when touched the surface of glass, its stability will decline gradually. The degree of hydrolysis of 0.047M fluoroboric acid solution will increase fro 20.6% to 72.6% if kept in glass window for over 32 days. It is highly corrosive, but it will not corrode glass at normal temperature. It can react with metal elements, metal fluorides, oxides, hydrates or carbonates and produce fluoroboric salts. Toxic!

Uses: Used as the cleaning agent and corrodent for the metal surface oxides and silicate film, to clean aluminum and alloy before they are plated. 2.5% solution is used for electrolyzing and polishing pure aluminum, removing weld flux from metal, and as the re-washing liquid for electroplating elements; used as the catalyst, antiseptics, chemical reagent for alkylation and polymerization, as the raw materials for making various fluoroboric salts.

Packing: Polythene plastic drum, net weight 25kg.

Price for Reference: 50% Grade: RMB12, 000/T; 40% Grade: RMB8, 500/T

Product Quality Enterprise Standard