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Chitin

Description Chemical structure Source applications Preparation
Chitin
Chitin structure
CAS No.
1398-61-4
Chemical Name:
Chitin
Synonyms
C 7170;CHITIN;chitina;b-Chitin;a-chitin;Clandosan;CHITIN(RG);beta-chitin;CHITOSAN 10;Chitin-13CX
CBNumber:
CB9853096
Molecular Formula:
C6H11NO4X2
Formula Weight:
161.16
MOL File:
1398-61-4.mol

Chitin Properties

Melting point:
>300°C (dec.)
Boiling point:
737.18°C (rough estimate)
Density 
1.3744 (rough estimate)
refractive index 
1.6000 (estimate)
storage temp. 
Room Temp
solubility 
dilute aqueous acid (pH <6.5).: soluble
form 
purified powder
color 
White
Water Solubility 
insoluble
Merck 
14,2065
Stability:
Stable. Incompatible with strong oxidizing agents.
FDA UNII
8SH93A7QWW
NCI Dictionary of Cancer Terms
chitin
EPA Substance Registry System
Chitin (1398-61-4)
SAFETY
  • Risk and Safety Statements
Hazard Codes  Xi,Xn
Risk Statements  20/21/22-36/37/38
Safety Statements  24/25-36-26
WGK Germany  3
RTECS  FM6300000
3
TSCA  Yes
HS Code  32139000
NFPA 704
1
1 1

Chitin price More Price(11)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich C7170 Chitin from shrimp shells practical grade, powder 1398-61-4 100g $102 2021-03-22 Buy
Sigma-Aldrich C7170 Chitin from shrimp shells practical grade, powder 1398-61-4 1kg $709 2021-03-22 Buy
TCI Chemical C0072 Chitin 1398-61-4 25g $20 2021-03-22 Buy
TCI Chemical C0072 Chitin 1398-61-4 250g $57 2021-03-22 Buy
Alfa Aesar J61206 Chitin 1398-61-4 100g $37.6 2020-06-24 Buy

Chitin Chemical Properties,Uses,Production

Description

Chitin is a naturally occurring polysaccharide found in the shells of living organisms such as crabs, lobsters, tortoise, shrimps, and insects or it can be generated via fungal fermentation processes. And chitosan is a unique biobased polymer that is a derivative of chitin and forms the exoskeleton of arthropods. It is obtained by partial deacetylation of chitin using a chemical method or by enzymatic hydrolysis. In general, chitin with a degree of deacetylation of 70% or above is considered to be chitosan.

Chemical structure

Chitin is a naturally occurring polymer consisting of 2-acetamido-2- deoxy-D-glucose via a β(1-4) linkage. Three forms of chitin are available, namely α-, β-, and γ-chitin, however, the structure of α-chitin has been investigated more extensively than that of either the β- or γ- form. Very few studies have been carried out on γ-chitin because γ-chitin may be a distorted version of either α- or β-chitin.
Chemical structure of chitin
Its structure is similar to cellulose but with 2-acetamido-2-deoxy-β-D-glucose (NAG) monomer units. Chitin has limited applications because of its acetyl groups, but through the deacetylation process chitin is converted into chitosan. During the deacetylation process, the acetyl group present in chitin is converted into hydroxyl (-OH) and amino (-NH2) groups in the chitosan. The modification of the reactive functional groups present in chitosan opens the possibility of broad application in many fields.

Source

Chitin is usually isolated from the exoskeletons of arthropods’ chitin-based tissue (30%-40% protein, 30%-50% calcium carbonate, and 20%-30% chitin), such as crustaceans, mollusks, insects, and certain fungi. It is a biological nanocomposite material strictly hierarchically organized which reveals various structural levels. At the molecular level is the polysaccharide chitin itself. The next structural level is the arrangement of c. 18-25 of such molecules in the form of narrow and long crystalline units, which are wrapped by proteins, forming nanofibrils of about 2-5 nm diameter and about 300 nm length. The next step in the scale consists of the clustering of some of these nanofibrils into long chitin-protein fibers of about 50-300 nm diameter.
Sources of chitin
Chitin is mainly occurs in three different polymeric α-, β-, and γ-forms. The chains are arranged in stacks or sheets in α-chitin and adjacent sheets along the c-axis have the same direction in a parallel arrangement. The α-chitin occurs in the exoskeletons of crustaceans (e.g., crabs, lobsters, and prawns). In the case of β-chitin, the adjacent sheets along the c-axis present in opposite directions in an antiparallel arrangement and it can be found in squid pen, certain diatoms, and vestimentiferans (a class of deep-sea animal). However every third sheet is in the opposite direction to the preceding sheets in γ-chitin. It mainly exists in fungi and yeast.

applications

Chitin and its derivative chitosan are natural biopolymers which are extracted from crabs, prawns, and shrimps. Chitin consists of β-(1,4)- linked 2-acetamido-2 deoxy-β-D-glucose which is insoluble in water and hydrophobic in nature.
Chitin is a natural biopolymer, which is biocompatible and biodegradable and useful in many applications like biomedical, electronics, photography, and textiles. The main advantages of chitin and its derivates are the low cost and easily availability. The chitin-based composites like chitin beads, chitin nanofibers, and chitin hydrogels are used in drug delivery and tissue engineering applications. In recent times, chitin and its derivates have gained much importance in the field of electronic applications as sensors and energy storage applications. Chitin nanofiber papers are being used as flexible green electronics in solar cells and organic light-emitting diodes. Aksoy et al. prepared low-cost chitin derivatives with high conductivity, for the construction of Schottky diodes, which are useful for photoelectrical applications. Schauer et al. reported a variation of the piezoelectric effect of the chitin electrospun nanofibers.

Preparation

Chitin (C8H13O5N)n, is derived from the Greek word “chiton,” meaning a coat of mail. It is a natural polysaccharide of β-(1-4)-N-acetyl-D-glucosamine monomers, first identified by the chemist Henri Braconnot in 1811.
A suspension of chitin crystallite particles was first prepared by Marchessault et al. in 1959. In this method, 2.5 N hydrochloric acid solution was used to treat purified chitin under reflux for 1 h. After the reflux, the excess acid was separated by a decantation process and then distilled water was added to obtain the suspension. It was observed from their method that the acid-hydrolyzed chitin spontaneously dispersed into rod-like particles that could be concentrated to a liquid crystalline phase and self-assembled to a cholesteric liquid crystalline phase above a certain concentration. Though chitins are present within numerous taxonomic groups, on the commercial scale they are usually extracted from marine crustaceans, mainly because a large amount of waste is available as a by-product of food processing.

Description

Chitin is the most abundant natural amino polysaccharide. It has a similar annual yield as cellulose. Chitin is a kind of highly valuable material in biomedical applications because of its high biocompatibility, biodegradability and non-toxicity as well as its antimicrobial activity and low immunogenicity. It can be easily processed into gels, membrane, nanofibers, beads, nanoparticle, scaffold and sponges, enables its wide applications. In the tissue engineering, it can be used for manufacturing polymer scaffold to satisfy the demands of repairing, replacing, maintaining, or enhancing the function of a particular tissue or organ. In wound dressing, chitin can be used as antimicrobial reagent. In the field of drug delivery, the water-soluble carboxymethyl chitin (CMC) nanoparticle can be used as an effective carrier in drug delivery.

Chemical Properties

Chitin is a colorless, crystalline or amorphous powder that is insoluble in water, organic solvents, dilute acids, and alkalis. It dissolves in concentrated mineral acids with simultaneous degradation of the polymer. Although chitosan is insoluble in water, it does dissolve in aqueous organic acids, for example, acetic and formic acids, as well as inorganic acids. Chitin and chitosan preparation can vary due to the source, with compositional differences. Similarly, the physicochemical characteristics of chitin and chitosan differ between crustacean species and preparation methods. Several studies have clearly demonstrated the specific characteristics of these products. The Mw and degree of deacetylation (DD) vary with process conditions. The physicochemical characteristics of chitin and chitosan influence their functional properties. Mw and DD vary with process conditions or different extraction methods. Chitosan's application depends on physical, biological, and chemical properties and chitosan depends on two parameters, such as DD and Mw.

Uses

A naturally occuring fibre found in the shells of shellfish. Used for the analysis of chitinase. lysozyme substrate.

Uses

chitin (chitine) is a moisture retainer and film-forming agent. This is a naturally occurring polysaccharide found in the shells of crustaceans, such as shrimp and crab, as well as in some fungi and algae.

Uses

Chitin, a β(1,4) polymer chain of N-acetyl-D glucosamine, is used as a substrate to identify, differentiate and characterize chitinase(s) and chitin deacetylase(s). Chitin may be used as a viscosity/thickening agent or binder.

Definition

chitin: A polysaccharide comprisingchains of N-acetyl-d-glucosamine,a derivative of glucose. Chitin isstructurally very similar to celluloseand serves to strengthen the supportingstructures of various invertebrates.It also occurs in fungi.

Agricultural Uses

Chitin is a polysaccharidec omprising chains of N-acetyl- D-glucosamine, a derivative of glucose, linked byβ-1,4 bonds and containing about 77 nitrogen atoms. It may be visualized as cellulose in which the hydroxyl groups on the second carbon are replaced by -NHCOCH3 groups Chitin is structurally very similar to cellulose and serves to strengthen various invertebrates. It offers resistance to chemicals and is present in the cell wall of some fungi as well as in the exoskeleton of insects.

References

Kumar, Majeti NV Ravi. "A review of chitin and chitosan applications." Reactive and functional polymers 46.1 (2000): 1-27.
Jayakumar, R., et al. "Biomedical applications of chitin and chitosan based nanomaterials—A short review." Carbohydrate Polymers 82.2 (2010): 227-232.

Chitin Preparation Products And Raw materials

Raw materials

Preparation Products


Chitin Suppliers

Global( 301)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 22607 55
Hefei TNJ Chemical Industry Co.,Ltd.
+86-0551-65418679
86-0551-65418697 info@tnjchem.com China 3000 55
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 29954 58
Hebei Guanlang Biotechnology Co., Ltd.
+8619930503282
sales3@crovellbio.com China 5882 58
Hubei xin bonus chemical co. LTD
86-13657291602
027-59338440 linda@hubeijusheng.com CHINA 23035 58
Shandong chuangyingchemical Co., Ltd.
18853181302
sale@chuangyingchem.com CHINA 5917 58
BOC Sciences
1-631-485-4226
1-631-614-7828 inquiry@bocsci.com United States 19752 58
CONIER CHEM AND PHARMA LIMITED
86-18523575427
sales@conier.com CHINA 47498 58
Zhuozhou Wenxi import and Export Co., Ltd
+8613111626072 (WhatsApp)
Wechat: +8613111626072 Wickr me: waynehu zzwenxi@126.com CHINA 13187 58
Antai Fine Chemical Technology Co.,Limited
18503026267
info@antaichem.com CHINA 9664 58

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View Lastest Price from Chitin manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2021-11-08 Chitin
1398-61-4
US $5.00 / KG 1KG 99% 20 Tons/Months Wuhan wingroup Pharmaceutical Co., Ltd
2021-10-13 Chitin
1398-61-4
US $10.00 / Kg/Bag 1Kg/Bag 99% 20 Tons Hebei Zhanyao Biotechnology Co. Ltd
2021-08-26 Chitin
1398-61-4
US $10.00 / Kg/Drum 1KG 98% 10 ton Hebei Crovell Biotech Co Ltd

Chitin Spectrum


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