L-Cysteine CAS 52-90-4

• Customization: Available
• CAS No.: 52-90-4
• Formula: 52-90-4
• Model NO.: zhishang chemical
• EINECS: 52-90-4
• Type: Synthesis Material Intermediates
• Appearance: Powder
• Quality: Industrial
• Colour: White
• Certificate: ISO 9001
• Sample: Available
• Supply Type: OEM/ODM
• Delivery: 3-5day
• Brand: Zhishang Chem
• Transport Package: 100g; 1kg; 25g
• Specification: sample free 1kg
• Trademark: ZHISHANG
• Origin: China
• Production Capacity: 50000kg/Mouth

Product Description

 

Melting point	220 °C (dec.)(lit.)
alpha	8.75 º (c=12, 2N HCl)
Boiling point	293.9±35.0 °C(Predicted)
density	1.197 (estimate)
FEMA	3263 | L-CYSTEINE
refractive index	8.8 ° (C=8, 1mol/L HCl)
storage temp.	Store at RT.
solubility	H2O: 25 mg/mL
pka	1.92(at 25ºC)
form	Solid
color	White
PH	4.5-5.5 (100g/l, H2O, 20ºC)
optical activity	Optical rotation: +8° to +9° (c = 5, 1 N HCl, 20°C).
Water Solubility	280 g/L (25 ºC)

 

Packing
· 1kg/aluminium foil bag, with two plastic bags inside.
· 25kg/fiber drum, with two plastic bags inside.
Size:ID 42cm*H52cm,0.08m3/drum;
Net Weight:25kgs Gross Weight:28kgs.

Delivery

1. ≤50kg, Express delivery recommended, usually called as DDU service;
2. ≤500kg,Air shipping recommended, usually called as CIF service;
3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;
4. For high value products, please select air shipping and express delivery for safety.About us
           Shandong Zhishang Chemical Co.,Ltd owned by Zhishang International Group,is a new chemical enterprise with R&D.
   manufacture and sales department.
         Our company mainly produce pharmaceutical raw materials and intermediate(expecially Carbohydrate derivatives series).
         In recent years,we had made big breakthrough in feed additive,plant extraction,industrial chemicals line.
         With our "Honest operation,Quality controlling,Clients first"theory,our company enjoy good repute both home and abroad.
        The R&D center located in High-tech zone in Jinan,our production based is in Chemical park of Zhangqiu and Tai'an.Our production process strictly conform with ISO 9001 and ISO 2000 standard.Our lab and workshop also follows strictly with GMP standard.Our products are sold all over Europe,North&South America, Sino-East, Asia and pacific area as well as Africa,we establish long term and stable business relations.We have large scale liquid chemical terminal and professional chemical warehouse.
         We will always adhere to expand business scope and provide the best quality products and service to the world.
   

FAQ

1. DO YOU ACCEPT SAMPLE ORDER?
   We accept sample orders. We will make samples before mass production, and after sample approved, we'll begin mass production. Doing 100% inspection during production, then do random inspection before packing.
   
    
   2.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.
   
   3.WHAT'S YOUR MOQ?
   Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.
   
   4.DO YOU SUPPLY PRODUCT REPORT?
   Yes. We'll give you product analysis report before shipping.
   
   5.IS THERE A DISCOUNT?
   Different quantity has different discount.

Our Advantage

10 Years 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.