Hebei Nengqian Chemical Import and Export Co., LTD
Assessed Supplier Enterprise Certification
- Assessed
Supplier - 4th
years
Assessed Supplier Enterprise Certification
Product Certification&
Enterprise Certification
Country: 
China (Mainland)
Business Type:Trading Company
Tel: 86-139-10575315
Tel: +86 15632961819
Tel: +86 18233902561
Tel: +86 15717685612
Tel: +86 16630923639
Tel: +86 18732968538
Tel: +86 18833033983
Tel: +86 19831957301
Mobile: +86 19831957301
Tel: 86-139-10575315
Fax: 4001020630
URL: https://www.nengqianchemical.com/
Province/state: Hebei
City: Handan
Street: Congtai District, La Defense North
MaxCard:
Ms.AnnaCAS NO.1401-55-4
Pharmaceutical grade(1-50)KilogramPharmaceutical grade(51-99)Kilogram
Our Advantage
Rich Experience
Our products are sold all over Europe,North&South America, Sino-East, Asia and pacific area as well as Africa,we establish long term.
Quality service
Company cooperates with research institutes. We strictly control the process of raw materials up to finished product.
24 hour service
Quick and clear response to customers questions. Warm after sale service, we will help to solve the problems in your usage.
High quality
Dedicated to serving customers first, we provide reasonable prices, high quality products.
1) Standard:BP/USP/EP/Enterprise standard
2) All Purity≥99%
3) We are manufacturer and can provide high quality products with factory price.
2, Fast and safe delivery
1) Parcel can be sent out in 24 hours after payment.Tracking number available
2) Secure and discreet shipment.Various transportation methods for your choice.
3) Customs pass rate ≥99%
4) We have our own agent/remailer/distributor who can help us ship our products very fast and safe,
and we have stock in there for transferring.
| Melting Point | 218 °C (lit.) |
| Boling Point | 862.78°C (rough estimate) |
| Flash Point | 198°C |
| Water Solubility | 250 g/L (20 ºC) |
| Solubility | Soluble in water, etc. |
| Appearance | Yellow powder |
| Color | Yellow to light brown |
| Merck | 14,9052 |
| BRN | 8186396 |
| PH | 3.5 (100g/l, H2O, 20°C) |
| Storage Condition | Storage temperature: no restrictions. |
| Stability | Stable. Incompatible with metallic salts, strong oxidizing agents, iron and other heavy metals. |
| Sensitive | Air & Light Sensitive |
| Refractive Index | 1.7040 (estimate) |
| MDL | MFCD00066397 |
| Physical and Chemical Properties | Trait pale yellow amorphous powder or loose, lustrous, scaly or spongy solid that can be darkened when exposed to air. Odorless, with a strong astringent taste. melting point 210~215 ℃ flash point 187 ℃ solubility: soluble in water, ethanol, acetone, almost insoluble in benzene, chloroform, ether and petroleum ether. |
| Use | Suitable for tanning clothing leather, preferably in combination with other tanning agents. |
| properties | this product is light yellow to light brown powder with special smell and extremely astringent taste. Soluble in 1 part of water or ethanol, soluble in acetone, insoluble in chloroform or ether. |
| use | clarifier, astringent, crude oil deodorant, fragrance aid; Tannic acid can be used for tanning, ink manufacturing, paper and silk gluing, boiler descaling, etc., as well as mordant, clarifier for beer and wine, coagulant for rubber, etc. It can be used in printing and dyeing, metallurgy, medicine and other industries. Tannic acid itself has very low toxicity. Precipitation and gravimetric determination of beryllium, aluminum, gallium, indium, niobium, tantalum and zirconium. Determination of copper, iron, vanadium, cerium and cobalt. Precipitants for proteins and alkaloids. External indicator when ammonium molybdate titrates lead. Dye mordant. used in leather industry suitable for tanning equipment leather, bottom leather and sheepskin. It should be stored in a cool, dry and ventilated warehouse. It is best to use with other tanning agents. mainly used for tanning, also used in medicine, ink, printing and dyeing, rubber and metallurgy and other industries, as well as water treatment and other aspects used for tanning, dyeing fishing nets, boiler descaling, drilling, etc. used as analytical reagents, also used in the pharmaceutical industry used for bare skin acid and vegetable tanning liquid to adjust the pH value. It can also be used for vegetable tanning and rinsing. Due to strong acidity, it cannot be packaged in iron containers. It should be stored in a cool warehouse. used as water-based drilling viscosity reducer, cement retarder. In the pharmaceutical industry, it is used as a raw material for the preparation of gallic acid, pyrogallol, and sulfa drugs. Tannin is a hemostatic drug. It has been used in medicine to treat pharyngitis, tonsillitis, hemorrhoids and skin blister. It can be used to stop diarrhea and bowel preparation. Tannins can form precipitation with metals, alkaloids and glycosides, which can detoxify these substances. Tannin can be used for tanning, ink manufacturing, paper and silk gluing, boiler anti-scaling, etc., can also be used as mordant, beer and wine clarifier, rubber coagulant, etc., and determination of beryllium, aluminum, nickel, Copper and other metal reagents. In chemical production, gallic acid and pyrogallic acid can be produced. Tannin is used as dilution when treating drilled mud. Tannin powder and caustic soda are prepared into tannin lye in proportion, which can reduce the shear force and adhesion of thickened mud and improve mud flow. On the contrary, if tannin powder is directly added to the mud, due to its weak acidity, the pH of the mud will decrease through ion exchange with clay particles. Reduce the hydration of the surface of the clay particles, so that the clay particles form a network structure and improve the shear force and viscosity of the mud. According to my country's GB 2760-89 regulations, "solidified tannin" can be used for low-alcohol and fruit wine, and can be used as a clarifier to remove suspended substances such as protein in a turbid state. It is also used as an astringent and crude oil deodorant in food workers. Precipitation and gravimetric determination of beryllium, aluminum, gallium, indium, niobium, tantalum and zirconium. Colorimetric determination of copper, iron, vanadium, cerium and cobalt. Precipitants for proteins and alkaloids. External indicator when ammonium molybdate titrates lead. Dye mordant. Make ink, paper, silk, artificial cutin, gallic acid and pyrogallic acid. Brush beer and wine. Precipitation and gravimetric determination of beryllium, aluminum, gallium, indium, niobium, tantalum and zirconium. Specific determination of copper, iron, vanadium, cerium and cobalt. Precipitants for proteins and alkaloids. External indicator when ammonium molybdate titrates lead. Dye mordant. Used for the precipitation and gravimetric determination of beryllium, aluminum, gallium, indium, niobium, tantalum and zirconium; used for the colorimetric determination of copper, iron, vanadium, cerium and cobalt; used as a precipitant for proteins and alkaloids; Used as an external indicator for the titration of lead by ammonium molybdate; used as raw materials for the preparation of pharmaceutical tannic acid, metabenoic acid, and sulfonamide drugs; used as fixing agents, mordants and synthetic dyes in textile printing and dyeing; clarifying agent for low-alcohol wines such as beer and wine in food Reacts with metal iron to synthesize iron tannate complexes, reducing agents in the synthesis of metal nanoparticles, precipitants for proteins and alkaloids, external indicators for ammonium molybdate titration of lead, dye mordant. |
| Brief History | In 734 AD (the 22nd year of Tang Kaiyuan), Chen Zangqi included Galla in the Pharmacopoeia in "Materia Medica Supplements. In Ming Li Shizhen's "Compendium of Materia Medica", there is a record of Galla chinensis that "the leather is made into a hundred herbs, and it is used for soap color. In 1862, Galla Chinensis went as far as Europe. In 1887, S.Mierzinski used Chinese gallnut to extract tannins as tanning materials. In 1936, Li Fuhua and others wrote an article about Chinese gall and its utilization. Around 1940, Wu Bingyan, Wei Wende, Fang Xinfang and others from China Yellow Sea Chemical Industry Society studied the method of extracting tannins from Galla Chinensis and fermenting gallic acid. During the same period, factories were set up in Shanghai and Chongqing to produce tannic acid and gallic acid. In 1957, Shanghai Renji Chemical Plant moved to Guizhou, the production area of Galla, and a second chemical plant was built in Zunyi City to continue production. In 1988, Hubei applied new technology and new equipment to build a modern tannic acid (series of products) factory in Zhushan County. There are also several small-scale tannin workshops in Henan, Shaanxi, Hunan, Yunnan and other provinces, with an annual production capacity of about 3000 tons. Since the 1830s, Turkey, Peru, and Venezuela have successively used Turkish gallus (also known as dyed oak gallus) and spiny cloud pods to produce tannic acid or gallic acid. There are still processing and utilization. |
| Galla chinensis | Galla chinensis is composed of some aphids of the family Aphididae. When it is parasitic on the leaves of plants such as the genus Saline of the family Rhizoctonia, the young tissues of the host are mechanically and chemically stimulated by the aphids, and they grow abnormally locally and expand into irregular circles and spindles, A sac-shaped gall with angular protrusions or flowery appearance. In the process of aphids, one side ingests the nutrients of the host plant, and at the same time secretes saliva containing a large amount of enzymes, and enters the cambium through the puncture, which enhances the metabolism of nearby cells and stimulates cell meristem. Aphids continue to multiply and feed in the galls, and the galls continue to expand. At first, there was only one aphid in the gall. After several generations of reproduction, the number has increased dramatically. After the last generation became a winged aphid, the shell burst, flew out of the gall, and migrated to the winter host (a type of moss) to overwinter. In the coming year, I will fly to the host trees such as salt skin wood for business and reproduction, and then form gallnut. The necessary conditions for the production of gallnut are: there is an ecological environment suitable for the normal growth and reproduction of gallic aphids, summer host trees and winter host moss. It also has gallic aphid, summer host tree and winter host moss. In the ecological environment, climate plays an extremely important role in the production of Galla chinensis. The climate of the Galla production area is characterized by mild climate, abundant rainfall, more rainy days, more clouds, less sunshine, high humidity, and no dry season or no obvious dry season throughout the year. Although there are more than 10 types of gallnut, the main products used for production or export are horngallate and belly gallate. Horn galline is mainly produced south of the Yangtze River, and its output accounts for about 85% of the total output of the production area. The north of the Yangtze River and the south of the Qinling Mountains are the main producing areas of belly galling, and its output accounts for about 80% of the total output of the producing areas. In the total amount of Chinese gall, horn galline accounts for about 80%, belly galline accounts for about 15%, and galline accounts for about 5%. Galla Chinensis is mainly composed of Galla Chinensis tannin, about 73%. In addition, it contains a small amount of cellulose, lignin, starch, pectin, pentose, etc. In galla chinensis tannin, tannin accounts for about 70%, gallic acid accounts for about 21%, tricallic acid accounts for about 1%, and the rest is pentasylglucose. Galla chinensis is mainly used as a raw material for the production of industrial tannins, medicinal tannins, gallic acid and pyrogallic acid. Figure 2 is a picture of gallnut plants. |
| The role of industrial tannic acid and medicinal tannic acid | Tannic acid is mainly used as a mordant in dyeing, and is also used to prepare gallic acid and pyrogallic acid. It can also make leather tanning agents, rubber coagulants, protein and alkaloid precipitants, and reagents for the determination of beryllium, aluminum, nickel, copper and other metals. The light yellow to light brown amorphous powder obtained by evaporating and drying the water extract of Galla Chinensis is industrial tannic acid, containing more than 80% tannic acid, and also contains a small amount of gallic acid and mesophanic acid., Tricallic acid and quintufold acylglucose, etc. Tannic acid is an ester formed by combining 1,3,4,6-tetra-O-gallacyl-2-do-O-gallacyl-β-D glucose with 1 molecule of glucose and 8~9 gallic acids. Tannic acid is easily hydrolyzed by acid or enzyme, and the hydrolysis products are gallic acid and glucose. the main functions of industrial tannic acid are as follows: ① as raw materials of gallic acid and pyrogallic acid. ② mordant. Used for fiber fixation or dyeing, as a salt-based dye. ③ Ore flotation agent. Rare metal smelting, germanium is extracted from lead-zinc ore or soot, rare metals such as thorium and polonium are extracted from solution, and lead and copper are extracted from chalcopyrite. ④ conversion paint. Aluminum and its alloy plate, steel, copper, zinc surface corrosion prevention, etc. ⑤ Food additives. Such as food antioxidants, beverage clarifiers, high-grade inks and inks. ⑥ drilling mud thinner. ⑦ Synergist. Synthesis of 2,4-diamino-5-(3,4, 5-trimethoprim)(trimethoprimam), referred to as TMP or sulfanilamide synergist. ⑧ Deodorant. Used in refrigerators, warehouses, toilets to remove ammonia and other odors. In addition, tannic acid can also synthesize Kecuan diamine, Kecuan Zhuo and other heart disease drugs; synthesize bifendate to treat hepatitis B; synthesize antimony -273 to treat schistosomiasis. tannic acid can inhibit bacterial growth and intestinal endotoxin absorption, and can be used to prevent and treat diarrhea. Medicinal tannic acid can be directly used in beverages, frozen products, candies, ice cream, meat products; as an astringent for burns and scalds, gastrointestinal hemostatic, to prevent infection; can be made into tannin glycerin, tannin protein, tannin Acid ointment, anti-cold agent (N-diamidinylmorpholine tannin), health promoters, insect repellents, insecticides, anti-radiation agents, contraceptives and special toothpaste, etc. |
| Reference quality standard | In 1985, the U.S. Food and Drug Administration included tannic acid in the General Confirmed Safety (GRAS), indicating that it is harmless or not dangerous. Can be used for the preparation of medicines and cosmetics; as ingredients for foods such as frozen dairy products, meat products or beverages such as soda, tea, and wine. fig. 3 is a reference quality standard for industrial tannic acid and medicinal tannic acid. |
| production method | tannins exist in the bark fruits of various trees (such as oak and sumac), and are also the main components of galls generated by these trees affected by insects, with a content of 50-70%. Crush Galla chinensis to remove impurities such as insect carcasses and insect excrement, put it into a copper or wood extraction tank, extract with soft water, concentrate the extract under reduced pressure, add a small amount of ether, and spray dry to obtain light tannic acid. Medicinal tannic acid is to extract the concentrated solution with ether, bleach the leaching solution with sodium heavy sulfite, and recover ether, which is the tannin for medicine. the gallnut is broken, screened, and then impregnated with water, the impregnated water is clarified, preheated, and then spray drying, fine dry powder sieved to the finished product. 100 kg of refined naphthalene was put into a sulfonation kettle, the temperature was raised to 125 ℃, 120kg of concentrated sulfuric acid was added under stirring, and the reaction was carried out at 155~165 ℃ for 6~8h. At the end point of sampling, if it is completely dissolved in water, it proves that sulfonation is complete. Gradually cool down to 110 ℃, add a small amount of water to dilute. The material is hydraulically fed into the condensation kettle at about 80 ℃. 39kg of 37% formaldehyde aqueous solution is added dropwise at about 70 ℃, and the solution is reacted at 80~90 ℃ for 3 hours after dropping, and the blue-black viscous solution is the finished product. The larch bark is crushed, extracted, purified, concentrated and dried to obtain the finished product. |
| category | toxic substances |
| toxicity classification | highly toxic |
| acute toxicity | abdominal cavity-mouse LD50: 150 mg/kg; Intravenous-mouse LD50: 50 mg/kg |
| flammability hazard characteristics | thermal decomposition spicy stimulation smoke |
Product Packaging：
1) 1kg/bag (1kg net weight, 1.1kg gross weight, packed in an aluminum foil bag)
2) 25kg/drum (25kg net weight, 28kg gross weight; Packed in a cardboard-drum with two plastic-bags inside; Drum Size: 510mm high, 360mm diameter)
Storage：
Stored in a cool and dry well-closed container. Keep away from moisture and strong light/heat.
Delivery：
Usually within3-5 working days after full payment.
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;
Our Service:
1. Fast Delivery: We can delivery within 24 hours upon receipt of your payment.
2. Quality can be promised. Hot sell to Worldwide.
3. Payment Terms: T/T,, t/t
4. Free Sample available at any time.
5. Tracking your order at any time. Inform your order's further new situation at any time.
6. Package: Professional packing with professional materials.
Packing:
1. Inner double plastic bags----25kg/Fiber drum (35*35*45cm, GW: 28kg, NW: 25kg);
2. Inner double plastic bags----5kg/Aluminum foil bag (GW: 6.5kg, NW: 5kg).
3. Inner double plastic bags----1kg/Aluminum foil bag (GW: 1.5kg, NW: 1kg).
P.S.: we accept packaging customization.
Delivery:
1. Stock products are normally shipping within 3 working days.
2. For rush delivery, please contact our sales team for particular arrangement.
Shipping Details:
1. We ship goods via DHL, Fedex, UPS, TNT, China post, NL Post and other couriers, weight from 10g to 1000kg or even bulker.
2. Shipping details & shipping documents will be provided and sent by email.
3. We keep tracking the shippment until clients well received.
4. After years export shipping experience, with professional and experienced cooperated forwarders, we ensure that goods can be delivered in multiple ways safetly and efficiently.
About us
Our company specializes in processing and selling chemical raw materials, chemical products, pharmaceutical intermediates, veterinary medicine intermediates, dye intermediates, pigments, cosmetics raw materials and chemical reagents,
We have compalete sales and service team , information feedback vertical integration of a sound marketing network, products are sold throughout the country and exported to South Asia, Europe, America, Africa and other more than 20 countries and regions.
Companies adhering to the "pursuit of quality, innovation and development" business philosophy, to serve as a foundation, for the survival by the quality, seek development by science and technology, adhere to quilty comes first,fair price,good sense of customer service and responsibility. in the future hebei Nengqian import and export trade Co.,Ltd will always hold "integrity, innovation" business philosophy, to achieve honesty management, on the way of specialization, internationalization, Keep moving!
FAQ:
1. Are you a trade company or factory
We are a factory with our own trading company.
2.How do you control the quality
Our factory is equipped with professional technicians to control quality, out inspectors take sample for testing every 2 hours to ensure the quality of our production. We also accept BV, SGS or any other Third-party inspection.
3. How long is lead time
We deliver goods within 3 days for small order, 7-10 days for bulk order.
4. Where is your factory located How can I visit the factory
Our factory located in HEBEI, China.
5. Can i get some samples
Yes, we can supply free sample, but the shipping cost be paid by our customers.
6. How to start orders or make payments
Proforma invoice will be sent first after confirmation of order, enclosed our bank information.Payment by T/T,
7. How to confirm the Product Quality before placing orders
You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples.
You can send us your product specifications and requests,we will manufacture the products according to your requests.
8. How long is lead time
We deliver goods within 3 days for small order, 7-10 days for bulk order.
9. How do you treat quality complaint
First of all, our quality control will reduce the quality problem to near zero. If there is a realquality problem caused by us, we will send you free goods for replacement or refund your loss.