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.617-48-1
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.
| Molar Mass | 134.09 |
| Density | 1,609 g/cm3 |
| Melting Point | 131-133°C(lit.) |
| Boling Point | 150℃[at 101 325 Pa] |
| Specific Rotation(α) | [α]D20 -0.5～+0.5° (c=5, H2O) |
| Flash Point | 203°C |
| Water Solubility | 500g/L at 25℃ |
| Solubility | Soluble in water, alcohol, slightly soluble in ether, insoluble in benzene. |
| Vapor Presure | <0.1 mm Hg ( 20 °C) |
| Vapor Density | 4.6 (vs air) |
| Appearance | White crystal or crystalline powder |
| Color | White to Off-White |
| pKa | pK1:3.458;pK2:5.097 (25°C) |
| Storage Condition | Refrigerator |
| Stability | Stable. Incompatible with strong oxidizing agents, strong bases, amines, alkali metals, carbonates. |
| Sensitive | Sensitive to light |
| MDL | MFCD00064212 |
| Physical and Chemical Properties | Character malic acid is stable under normal conditions, and has hygroscopicity when humidity is high. Triclinic white crystals. melting point 130 ℃ relative density 1.601 soluble in methanol, ethanol, acetone and many other polar solvents. |
| Use | Food industry used as acidulants, color retention agents, preservatives and emulsion stabilizers such as egg yolk, also used in pharmaceutical |
| trait | triclinic white crystals |
| properties | DL-malic acid is stable under normal conditions and hygroscopic at high humidity. Triclinic white crystals. Melting point 130 ° C; Relative density of 1.601; Soluble in methanol, ethanol, acetone and many other polar solvents. |
| Use | DL-malic acid is used in the food industry as an emulsion stabilizer for acidulants, color retention agents, preservatives, egg yolk, etc, it is also used in the pharmaceutical industry. DL-malic acid is used as a acidulant for cool drinks (such as lactic acid bacteria drinks, milk drinks, soda, Cola), frozen foods (such as fruit Dew, ice cream, etc.), processed foods (such as fruit wine, mayonnaise), color-retaining agents for fruit drinks and the like, preservatives, and emulsion stabilizers for egg yolk and the like. Uses also include raw materials for pharmaceutical products, cosmetics, dental solutions, metal detergents, anti-coagulant agents in the textile industry, and fluorescent whitening agents for polyester fibers. malic acid is internationally recognized as a safe food additive. It is used as a sour agent, preservative and pH regulator. Its sour taste is soft and long lasting, and the sour taste is 20% stronger than citric acid. Can be used for all kinds of food, according to the production needs of the appropriate amount of use. The food industry is used as an emulsion stabilizer for acidulants, color retention agents, preservatives, egg yolk, etc, also used in pharmaceutical used as biochemical reagents and experimental reagents used as a sour agent for cool drinks (pure cool drinks, concentrated cool drinks, powder cool drinks, lactic acid bacteria drinks, milk drinks, soda, cola drinks), cold food Acidulants (fruit Dew, ice cream), processed food Acidulants (chewing gum, fruit fructose, marmalade, orange peel jam, tomato juice, soy sauce, vinegar, fruit wine, mayonnaise, margarine), antacids, tone preserving agents for fruit drinks, etc., preservatives (emulsion stabilizers for mayonnaise, etc.). DL-malic acid was neutralized with sodium carbonate solution and concentrated in vacuo to give DL-malic acid sodium ([63474-37-3]). It is also a seasoning, a salt substitute for patients with nephritis. Malate can be used as an additive for margarine and other edible oils. Non-edible uses of malic acid include raw materials that can be used as pharmaceuticals, cosmetics, dental solutions, metal detergents, buffers, anti-coagulants for textile industry, industrial deodorants, fluorescent whitening agents for polyester fibers, and a monomer for producing an alkyd resin. DL-malic acid and L-malic acid are safe and non-toxic substances, used as flavor enhancers, flavoring agents, auxiliary drugs and pH control agents, the United States should not exceed 6.9% of Hard Candy, other food is about 0.7%, but these two kinds of malic acid should not be used in baby food, the purity of the requirements of more than 99%, the melting point of 127-130 ℃, heavy metal content in 0.002%. The residue on ignition was less than 0.05%. The product is a strong acid, at 17 degrees C, 0.1 molar aqueous solution of pH 2.28, can stimulate the mucosa and damage the tooth enamel. |
| Application | DL-malic acid as a commonly used food additive and flavoring agent, widely used in jelly and fruit-based food, contribute to the absorption of food and improve appetite. As the acidulant, it can be used instead of citric acid; It is commonly used as a tone-retaining agent for a cool drink, a cold food, an acidulant for a processed food, a preservative, a fruit drink, and the like. In the non-food industry, it can be used in pharmaceuticals, cosmetics, metal cleaners, industrial deodorants and buffers. In the textile industry for the inhibitor, fluorescent whitening agent raw materials. |
| production method | DL-malic acid can be prepared by adding water to fumaric acid or maleic acid through high temperature and high pressure catalysis. Fumaric acid was dissolved in distilled water and heated to 50 °c and fed into the high pressure reactor. It is heated to 180-199 ℃, and the pressure is about 1MPa. After 8h of reaction, the temperature is lowered to below 100 ℃, and the reactant is forced out. The crystals were precipitated by vacuum concentration at 60 °c. After cooling, dehydration, and drying to obtain the finished product. The yield was 88%. Another major method of production of malic acid is fermentation, which is produced by fermentation of carbohydrates with mutant yeast. malic acid is produced by chemical synthesis, fermentation and enzymatic (or microbial) transformation. Chemical synthesis of 1dl-malic acid 185 of maleic anhydride was dissolved in of water and stirred in a stainless steel autoclave at-C ± 3 °c and MPA for 6-8 hours. In the reaction process, when the temperature> 120 ℃, maleic acid and water to produce malic acid; And when the temperature> 130 ℃, maleic acid itself also isomerization to fumaric acid. Under the reaction conditions, there is an equilibrium between malic acid and fumaric acid. Therefore, when the reaction was completed, the ratio of maleic acid to malic acid was 1:1.7. When fumaric acid is added in proportion at the beginning of the reaction, the yield can be increased from 63% to over 90%. After the reactants were cooled to below l00 ° C., the autoclave was concentrated under reduced pressure at 60 ° C., and then cooled, crystallized, centrifuged and dried to obtain a finished product. 2 microorganisms (or enzymes) Conversion of fumaric acid to produce L-malic acid Brevibacterium, Brevibacterium flavum and short ammonia producing bacteria and other microorganisms can make the conversion of fumaric acid to malic acid. First, the raw material fumaric acid and calcium carbonate were reacted to generate calcium fumarate, and then the calcium malate was generated by the conversion column (37 C). L-malic acid was obtained by extraction, and the conversion rate was 98%. Production of L-malic acid by one-step fermentation of a single strain aspergillus oryzae, Aspergillus parasiticus, Aspergillus flavus and other microorganisms can produce L-malic acid by fermentation of sugar raw materials. Rice sugar as raw material, with Aspergillus Flavus (UVT3 ASP Flavus), in 500I. The fermentation rate was 4.4% ~ 4.95%, and the conversion rate of sugar was 68% ~ 75% when the fermentation was conducted in the fermentor for 40H. 4 mixed fermentation two-step production of L-malic acid first, Rhizopus Rhizopus R25 in the medium containing 12% glucose to accumulate fumaric acid, and then inoculated with common Proteus P1 to continue the fermentation 2d, the yield of L-glycolic acid was 5.2~5.48g/100mL, and the conversion rate of sugar was 86.7% ~ 91.3%. With 18% of the potato powder can replace the medium containing 12% of glucose, L-malic acid production up to 5.47g/100mL. The fermentation broth was diluted and filtered, and the clear solution was concentrated under reduced pressure and cooled to obtain calcium malate. The L-malic acid was hydrolyzed with sulfuric acid and exchanged with 732 resin, and the eluate was exchanged with 301 anion resin to obtain a clear malic acid solution. Finally, it is concentrated under reduced pressure, cooled to crystallize, and recrystallized to obtain a finished product. |
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.