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 18732968538
Mobile: +86 18732968538
Tel: +86 18732968538
Fax: 4001020630
URL: https://www.nengqianchemical.com/
Province/state: Hebei
City: Handan
Street: Congtai District, La Defense North
MaxCard:
Ms.AnnaCAS NO.11138-66-2
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.
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Overview | Xanthan gum is a high molecular polysaccharide material polymerized from the same unit as a unit of 5 molecules of sugar. Each unit consists of 2-molecule glucose, 2-molecule mannose and 1 molecule glucuronic acid. Its main chain is composed of 2-molecule glucose connected by β-glucose through 1,4-glycosidic bonds. Its structure is the same as that of cellulose. Between phases, 2-molecule mannose and 1 molecule of glucose are connected to C3 of glucose. Glucuronic acid forms a side chain. There are pyruvate and carboxylic acid side groups on the side chain. Because its side chain contains acidic groups, it is polyanionic in the aqueous solution, forming the three-level three-dimensional structure of xanthan gum: the anionic side chain is wound around the main chain to form a spiral structure, and the molecules rely on hydrogen bonds to form a double-stranded helix, And the double-stranded helix structure is maintained by weak non-covalent bonds, forming a regular "super-bonded ribbon spiral polymer". Its unique properties are related to the pyruvate contained in it. Normally, the pyruvate content in xanthan gum can be used to measure its performance. Fig. 1 is xanthan gum |
| xanthan gum properties | 1. typical rheological properties with the increase of shear rate, due to the destruction of colloidal network, the viscosity decreases and the glue solution becomes thinner. however, once the shear force disappears, the viscosity can be restored, thus making it have good pumping and processing properties. Using this characteristic to add xanthan gum to the liquid that needs to add a thickener, not only the liquid is easy to flow during the transportation process, but also can return to the required viscosity after resting, so it is widely used in the beverage industry. 2. High viscosity liquid containing 2% ~ 3% xanthan gum at low concentration, its viscosity is as high as 3 ~ 7Pa · s. Its high viscosity makes it have broad application prospects, but at the same time it brings trouble to post-processing in production. 0.1% monovalent salts such as NaCl and divalent salts such as Ca and Mg can slightly reduce the viscosity of low-glue solution below 0.3%, but can increase the viscosity of high-concentration glue solution. 3. The viscosity of heat-resistant xanthan gum has almost no change in a wide temperature range (-98~90 ℃). Even if it is cooled at a high temperature of 130 ℃ for 30min, the viscosity of the solution has no obvious change. After many freezing-thawing cycles, the viscosity of the glue solution does not change. In the presence of salt, the solution has good thermal stability. If a small amount of electrolyte such as NaCl 0.5% is added under high temperature conditions, the viscosity of the glue solution can be stabilized. 4. The viscosity of acid-resistant and alkaline xanthan gum aqueous solution is almost independent of pH. This unique property is not available in other thickeners such as carboxymethyl cellulose (CMC). If the concentration of inorganic acid in the glue solution is too high, the glue solution is unstable; the hydrolysis of polysaccharide by acid will occur at high temperature, thus causing the viscosity of the glue solution to decrease. The content of NaOH is greater than 12%, which can cause gelling or even precipitation of xanthan gum. The concentration of sodium carbonate exceeds 5%, which can also cause gelling. 5. The anti-enzymatic xanthan gum skeleton has the peculiar ability not to be hydrolyzed by enzyme due to the shielding effect of the side chain. 6. Compatible xanthan gum can be miscible with most commonly used food thickener solutions, especially with alginates, starch, carrageenan, carob gum, the viscosity of the solution increases in the form of superposition. In aqueous solutions in the presence of various salts, it shows good compatibility. But high-valent metal ions, high pH will make them unstable, and adding complexing agents can prevent incompatibility. Soluble xanthan gum soluble in water, insoluble in alcohol, ketone and other polar solvents. In a very wide range of temperature, pH and salt concentration, it is easy to dissolve in water, and its aqueous solution can be prepared at room temperature. Air mixing should be reduced as much as possible during agitation. If xanthan gum is mixed with some dry substances such as salt, sugar, monosodium glutamate, etc. in advance, then moistened with a small amount of water, and finally stirred with water, the prepared glue liquid has better performance. It can be dissolved in many organic acid solutions and has stable performance. 8. The dispersity of 1% xanthan gum solution has a bearing capacity of 5N/m2, which is an excellent suspending agent and emulsion stabilizer in food additives. 9. Water-retaining xanthan gum has good water-retaining and fresh-keeping effects on food. |
| application | 1. in petroleum industry drilling, the 0.5% xanthan gum aqueous solution can maintain the viscosity of water-based drilling fluid and control its rheological properties, so that the viscosity of the drill bit part rotating at high speed is extremely small, which greatly saves power consumption, while the relatively static drilling part maintains high viscosity to prevent the borehole wall from collapsing, it is convenient to cut crushed stone and discharge out of the well. 2. In the food industry, it is better than current food additives such as gelatin, CMC, seaweed gum and pectin. Adding 0.2% ~ 1% to the fruit juice makes the fruit juice have good adhesion, good taste, and control penetration and flow; As an additive to bread, it can make bread stable, smooth in texture, save time and reduce costs; 0.25% are used in bread stuffing, food sandwich stuffing and sugar coating, it can increase the taste and flavor, the product structure is smooth, the shelf life is prolonged, and the stability of the product to heating and freezing is improved; in dairy products, 0.1% ~ 0.25% is added to ice cream, which can play an excellent stabilizing role; in canned food It provides good viscosity control and can replace part of starch, and one part of xanthan gum can replace 3-5 parts of starch. At the same time, xanthan gum has also been widely used in candy, condiments, frozen food and liquid food. (2016-07-22) |
| storage | xanthan gum can be widely used in about 100 kinds of products in more than 20 industries such as petroleum exploitation, chemical industry, food, medicine, agriculture, dyes, ceramics, papermaking, textiles, cosmetics, construction and explosive manufacturing. In order to facilitate preservation and transportation, it is generally made into dry products. Its drying has different treatment methods: vacuum drying, drum drying, spray drying, fluidized bed drying and airflow drying. Since it is a heat-sensitive substance and cannot withstand long-term high-temperature treatment, the use of spray drying will make its solubility worse. Although the thermal efficiency of drum drying is high, the mechanical structure is complex, and it is still difficult to realize for large-scale industrial production. Fluidized bed drying with idler balls is suitable for drying heat-sensitive viscous materials like xanthan gum because of the functions of enhancing heat and mass transfer and grinding and crushing, and the retention time of materials is also short. |
| precautions for use | 1. when preparing xanthan gum solution, if the dispersion is not sufficient, clots will appear. In addition to full stirring, it can be mixed with other raw materials in advance, and then added to water while stirring. If it is still difficult to disperse, a water-miscible solvent, such as a small amount of ethanol, can be added. 2. Xanthan gum is an anionic polysaccharide, which can be used together with other anionic or non-ionic substances, but cannot be compatible with cationic substances. Its solution has excellent compatibility and stability to most salts. Adding electrolytes such as sodium chloride and potassium chloride can improve its viscosity and stability. Divalent salts such as calcium and magnesium show similar effects on their viscosity. When the salt concentration is higher than 0.1%, the optimal viscosity is reached. If the salt concentration is too high, it does not improve the stability of xanthan gum solution, nor does it affect its rheology. Only when pH>10 (food products rarely appear), divalent metal salts Only show the tendency to form gels. Under acidic or neutral conditions, trivalent metal salts such as aluminum or iron form gels. High levels of monovalent metal salts prevent gel action. 3. Xanthan gum can be compatible with most commercial thickeners, such as cellulose derivatives, starch, pectin, dextrin, alginate, carrageenan, etc. In combination with galactomannan, it has a synergistic effect on improving viscosity. |
| identification test | solubility soluble in water, insoluble in ethanol (OT-42). In the gel formation test, 300ml of water was taken, placed in a 400ml beaker, preheated to 80 ℃, and 1.5g of sample and 1.5g of powdered bean gum were added under severe mechanical stirring. After stirring until the solution is formed, continue stirring for 30min. During the stirring process, the water temperature shall not be lower than 60 ℃ to stop stirring and cool at room temperature for more than 2 hours. When the temperature is lower than 40 ℃, a hard rubber-like gel should be formed, but if only the sample is used without adding carrageenan gum, the 1% control solution prepared in the same way will not form such a gel. |
| content analysis | accurately weigh 1.2g of sample and measure it according to GT-7 method. 0.25mol/L sodium hydroxide is equivalent to 5.5mg of carbon dioxide (CO2) per mL. |
| toxicity | ADI does not make special regulations (FAO/WHO,2001). Can be safely used in food (FDA, 172.695,2000). |
| usage limit | GB 2760-2000(g/kg): beverage 1.0; Dumpling wrappers (shrimp dumplings, fish skin dumplings, etc.) 1.0 (in terms of skin); Bread, dairy products, meat products, jam, jelly, colorful sauce, 2.0; Noodles, cakes, biscuits, shortening, instant coffee, fish products, ice cream, popsicles, ice cream, 10.0; Beverages and solid beverages, fried snacks, GMP. FAO/WHO(1984,g/kg): canned sardines and their products 10; Canned mackerel and enough fish 20 (calculated by filling soup); Pickled cucumber 5000mg/kg; Instant broth and soup 3000mg/kg; Cream 5 (only used for pasteurized whipped cream, or ultra-high temperature sterilized whipped cream and sterilized whipped cream for whipping); Cream cheese 5; after fermentation, the flavored yogurt treated by heating is 5000mg/kg; Cold drink 10. |
| use | as emulsion stabilizer and thickener, China stipulates that it can be used for noodles, cakes, biscuits, shortening, instant coffee, fish products, ice cream, popsicles and ice cream, with a maximum usage of 10 g/kg; The maximum usage is 2.0 g/kg in bread, jelly, dairy products, meat products, jam and color sauce; the maximum amount used in beverages is 1.0 g/kg. Stabilizer; Thickener; Emulsifier (dairy products, salads and other water-based foods); Suspended agents; Foam enhancer. When formulated with guar gum at 2:1, a strong gel can be obtained. It is used to enhance and improve the stability, concentration and density of seasoning sauce, sauce, canned pudding, frozen foaming milk, etc. widely used in food processing, oil drilling, pesticides, seeds, coating, feed, daily chemicals, textile printing and dyeing, papermaking, tobacco, casting, fire fighting and many other industries. used as food additives, also used in oil field drilling biochemical research. Stabilizers and emulsifiers for food, non-food and cosmetics. |
| production method | it is prepared by fermentation medium containing sugars (such as glucose, sucrose, starch, hydrolyzed starch, etc.) in the presence of suitable nitrogen source, dipotassium hydrogen phosphate and appropriate amount of trace elements, under the action of Xanthomonas campestris strain, fermentation, and then extraction, drying, crushing and other processes. the medium containing 1% ~ 5% glucose and inorganic salt was adjusted to the pH value of 6.0~7.0, the inoculum of Xanthomonas campestris (Xanthomonas campestris) was added, and cultured for 50~100h to obtain 4~12Pa s high viscosity liquid. After sterilization, isopropanol or ethanol is added to precipitate it, and then purified with isopropanol or ethanol, dried and crushed. With glucose or starch as carbon source, protein hydrolysate or inorganic ammonium as nitrogen source, Xanthan gum was isolated from the culture solution by the method of organic solvent extraction or high-valent metal salt precipitation. Extraction of xanthan gum At present, the methods of extracting xanthan gum in China include full solvent method and calcium salt method, and the products often contain a large number of bacteria. For this reason, the bacteria can be removed by enzymatic hydrolysis, I .e. 0.01% ~ 0.05% lysozyme is added to the fermentation broth and decomposed for 2 hours at 53 ℃ and 5.5 Ph value. Then 0.1% ~ 0.5% neutral protease was added at 40 ℃ with 7.2 Ph value for 4 hours. Finally, it is heated to kill the enzyme and cooled to enter the next process. The calcium salt method adjusted the Ph value of the fermentation clear liquid to 11.5, and added calcium chloride to precipitate xanthan gum calcium; after centrifugal separation, it was dispersed in ethanol for depolymerization, and then filtered, washed with ethanol, and dried to obtain the finished product. The whole solvent method adds a large amount of ethanol or isopropyl alcohol to the above-treated fermentation clear liquid to precipitate xanthan gum; the finished product is obtained after centrifugal separation and drying. Fermentation culture Fermentation culture is conducive to product extraction and separation, usually using clear liquid fermentation. The medium composition was glucose 2.5%,(NH4)3 PO4 0.15%,MgSO4 0.01%,KH2PO4 0.25%,Ph = 7 soil 0.1. Xanthomonas (Luqing P26-9) was cultured in a slant at 28-30 ℃ for 3 days, then in a seed tank at 28 ℃ for 16-18 hours after shaking flask culture, and then in a fermentation tank for 3 days at 28-30 ℃. |
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.