POLYCARBODIIMIDE
PolycarbodiiMide
CAS: 151-51-9
Molecular Formula: CH2N2
POLYCARBODIIMIDE - Names and Identifiers
| Name | PolycarbodiiMide |
| Synonyms | Methanediimine PolycarbodiiMide POLYCARBODIIMIDE Stabilisator 9000 Methanediimine (9CI) polycarbodiimidesolution |
| CAS | 151-51-9 |
POLYCARBODIIMIDE - Physico-chemical Properties
| Molecular Formula | CH2N2 |
| Molar Mass | 42.04 |
| Density | 1.03g/mLat 25°C |
| Boling Point | 154°C |
| Flash Point | 46°C |
| Refractive Index | n20/D 1.461 |
| Physical and Chemical Properties | Polycarbodiimide is also known as antioxidant PCD. Brown powder. Relative density 1.05. The softening point is 70~80 ℃. Easily soluble in petroleum, benzene, carbon tetrachloride and ethyl acetate. Insoluble in acetone, insoluble in ethanol and water. Used as anti-hydrolysis agent and antioxidant of compound polyurethane rubber, it can improve the stability of vulcanized rubber and delay the hydrolysis of rubber. It is advisable to mix the rubber at a temperature higher than its softening point to improve its effectiveness. Figure 1 is the structural formula of polycarbodiimide. |
POLYCARBODIIMIDE - Risk and Safety
| Hazard Symbols | T - Toxic |
| Risk Codes | R60 - May impair fertility R10 - Flammable R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S53 - Avoid exposure - obtain special instructions before use. S16 - Keep away from sources of ignition. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 1993 3/PG 3 |
POLYCARBODIIMIDE - References
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | polyurethane elastomer is an important component of polyurethane materials. The product obtained by the reaction of polyester polyol and isocyanate has been recognized by the market for its excellent impact resistance and wear resistance. Its application includes polyurethane thermoplastic elastomer, polyurethane microcellular elastomer, etc, instrument panel, windshield sealing strip, conveyor belt for mine, PU sole and various lining materials, etc. In addition, polyester resins such as PET and PBT have been widely used. |
| carbodiimide method | covalent cross-linking for enzyme immobilization another commonly used method is the use of water-soluble carbodiimide at pH 4.75~5 and the carboxyl group on the carrier reaction, A large number of highly active O-acyl isourea derivatives were generated on the carrier. Commonly used carbodiimides are 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide (EDC) and 1-cyclohexyl-3-(2-morpholino-ethyl)-Carbodiimide-N-methyl-P-benzene-sulfuric acid (CMC). The optimal coupling conditions of enzyme and activation carrier were 4~16h at 4 C and pH 7. There are two basic types of carbodiimide method for enzyme immobilization, namely, two-step method and one-step method. The former is to activate the carrier with carbodiimide, and then add the enzyme after washing. This method is most commonly used. The latter is to mix the carrier and the enzyme together and then add the carbodiimide to immobilize the enzyme. In addition, the enzyme is first treated with carbodiimide, and this effect occurs at the carboxyl group of the enzyme protein, which is then immobilized on the carrier amino group. water-soluble carbodiimides are often used for coupling between various enzymes and carriers. Acid phosphatase has been immobilized to polyacrylic acid-polyethylene interpolymer by one-step method with CMC and EDC; Glucoamylase and glucooxidase have been immobilized to activated carbon with EDC; EDC(pH 4.8,0 C, 18h) has been coupled to the soluble PVA fiber enzyme. In addition, carbodiimides are also often used in Spacer arm immobilization methods. Partition molecules commonly used in partition arm immobilization are 1, 6-diaminohexane hydrochloride and ε-aminocaproic acid. In the immobilization of n6-carboxymethylnad by Mazid and Laidler, the partition molecules were first coupled to n6-carboxymethylnad by CMC, and then mediated by CMC in one step (pH 5,500mg CMC/100mg NAD, the n6-carboxymethyl NAD modified by the partition molecule was immobilized on the partially hydrolyzed nylon mesh membrane at 21 °c for 24h. Kitano et al. immobilized alkaline phosphatase onto polystyrene latex particles using EDC with ε-aminocaproic acid as a separating molecule. |
Last Update：2024-04-09 21:04:16
Supplier List
Multiple SpecificationsSpot supply
Product Name: PolycarbodiiMide Request for quotationCAS: 151-51-9
Tel: +86-17551318830
Email: r@reformchem.com
Mobile: +86-17551318830
QQ: 3787852685
Multiple SpecificationsSpot supply
Product Name: PolycarbodiiMide Request for quotationTel: +86-17551318830
Email: r@reformchem.com
Mobile: +86-17551318830
QQ: 3785839865
Product Name: PolycarbodiiMide Request for quotation
CAS: 151-51-9
Tel: 17505222756
Email: pules.cn@gmail.com
Mobile: +86-17551318830
Wechat: 17505222756
CAS: 151-51-9
Tel: 17505222756
Email: pules.cn@gmail.com
Mobile: +86-17551318830
Wechat: 17505222756
Multiple SpecificationsSpot supply
Product Name: PolycarbodiiMide Request for quotationCAS: 151-51-9
Tel: +86-17551318830
Email: r@reformchem.com
Mobile: +86-17551318830
QQ: 3787852685
Multiple SpecificationsSpot supply
Product Name: PolycarbodiiMide Request for quotationTel: +86-17551318830
Email: r@reformchem.com
Mobile: +86-17551318830
QQ: 3785839865
Product Name: PolycarbodiiMide Request for quotation
CAS: 151-51-9
Tel: 17505222756
Email: pules.cn@gmail.com
Mobile: +86-17551318830
Wechat: 17505222756
CAS: 151-51-9
Tel: 17505222756
Email: pules.cn@gmail.com
Mobile: +86-17551318830
Wechat: 17505222756
View History