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Caprolactam

Production of polyamide fibers and resins Chemical properties Uses Production method Hazards & Safety Information
Caprolactam
Caprolactam structure
CAS No.
105-60-2
Chemical Name:
Caprolactam
Synonyms
P 6;CPL;PA 6;PK 4;A1030;Akulon;Capron;Stilon;Stylon;Grilon
CBNumber:
CB8721860
Molecular Formula:
C6H11NO
Formula Weight:
113.16
MOL File:
105-60-2.mol

Caprolactam Properties

Melting point:
68-71 °C(lit.)
Boiling point:
136-138 °C10 mm Hg(lit.)
Density 
1.01
vapor pressure 
<0.01 mm Hg ( 20 °C)
refractive index 
1.4935
FEMA 
4235 | 1,6-HEXALACTAM
Flash point:
152 °C
storage temp. 
2-8°C
solubility 
H2O: 0.1 g/mL, clear, colorless
form 
Crystals or Flakes
color 
White
Specific Gravity
1.042 (20/4℃)
PH
7.0-8.5 (333g/l, H2O, 20℃)
explosive limit
1.4-8%(V)
Water Solubility 
4560 g/L (20 ºC)
Merck 
14,1761
JECFA Number
1594
BRN 
106934
CAS DataBase Reference
105-60-2(CAS DataBase Reference)
NIST Chemistry Reference
Caprolactam(105-60-2)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  Xn
Risk Statements  20/22-36/37/38
Safety Statements  2-24/25
RIDADR  UN 2811 6.1/PG 2
WGK Germany  1
RTECS  CM3675000
Autoignition Temperature 707 °F
TSCA  Yes
HS Code  29337100
Hazardous Substances Data 105-60-2(Hazardous Substances Data)
Toxicity LD50 orally in rats: 2.14 g/kg (Smyth)
Symbol(GHS):
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H312 Harmful in contact with skin Acute toxicity,dermal Category 4 Warning P280,P302+P352, P312, P322, P363,P501
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H332 Harmful if inhaled Acute toxicity,inhalation Category 4 Warning P261, P271, P304+P340, P312
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
H336 May cause drowsiness or dizziness Specific target organ toxicity,single exposure; Narcotic effects Category 3 Warning P261, P271, P304+P340, P312,P403+P233, P405, P501
H370 Causes damage to organs Specific target organ toxicity, single exposure Category 1 Danger P260, P264, P270, P307+P311, P321,P405, P501
H372 Causes damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 1 Danger P260, P264, P270, P314, P501
Precautionary statements:
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P271 Use only outdoors or in a well-ventilated area.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P307+P311 IF exposed: call a POISON CENTER or doctor/physician.
P405 Store locked up.
P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P501 Dispose of contents/container to..…

Caprolactam price More Price(10)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich C2204 ω-Caprolactam 99% 105-60-2 1kg $37.4 2018-11-13 Buy
Sigma-Aldrich 77403 ω-Caprolactam analytical standard 105-60-2 100mg $57.2 2018-11-13 Buy
TCI Chemical C0022 epsilon-Caprolactam Zone Refined (number of passes:24) >99.0%(GC) 105-60-2 1sample $131 2018-11-22 Buy
TCI Chemical C0203 epsilon-Caprolactam >99.0%(GC) 105-60-2 25g $12 2018-11-22 Buy
Alfa Aesar L06999 epsilon-Caprolactam, 99% 105-60-2 100g $19.9 2018-11-13 Buy

Caprolactam Chemical Properties,Uses,Production

Production of polyamide fibers and resins

Caprolactam is the main raw material for the production of polyamide fiber and resin. Polyamide fiber, in the United States, is called nylon; in China, is called Chinlon because it was first commercialized in Jinzhou Petrochemical. Chinlon 66 is a polycondensation product of adipic acid and hexamethylene diamine. Polyamide 6 obtained from the ring-opening polymerization of caprolactam.
At present, the master of caprolactam production technology is mainly Sinopec Baling Petrochemical Design Institute and Yueyang Petrochemical Design Institute.
Cyclohexanone and phenol are the main raw materials for the production of caprolactam:
Cyclohexanone is a kind of important chemical raw material with wide range of application fields. It is colorless and odorless transparent liquid with mint and acetone odor. It is slightly soluble in water and soluble in ether, alcohol and other organic solvents. It is mainly used as the intermediates of caprolactam and others diacids and their salts. Because of its strong solubility, low toxicity and relatively low price, it is widely used as solvent and thinner for various paints, paints, inks and resins, polishes and thinners for leather processing, photographic and magnetic recording material and coating solvent, and so on. At the same time, it can also be used for preparation of some downstream derivatives, such as cyclohexanone-formaldehyde resin, peroxy cyclohexanone, o-methyl phenol, antioxidant 4010 and so on.
Phenol is also called phenolic acid, is one of the simplest phenolic organic matter with weak acidity. Pure phenol is a colorless crystal which exhibits pink color in the air due to being oxidized in a small part. It is toxic, corrosive, being slightly soluble in water at room temperature, easily soluble in alcohol and other organic solvents; when the temperature is higher than 65 ℃, it is miscible with water in any proportion. Concentrated solution has strong corrosiveness on the skin. Mistakenly contact with skin can be treated through rinsing with alcohol.
Addition of bromine water into the phenol solution will generate white precipitate immediately (2, 4, 6-Tribromophenol); being capable of having substitution reaction in the benzene ring with halogen, nitric acid, sulfuric acid, etc.; being able to have reaction with ferric chloride so that the solution is turned into a purple color; addition of bromine water into the solution will immediately generate white precipitate (2, 4, 6-Tribrominephenol); It is mainly used in the manufacture of phenolic resin, bisphenol A and caprolactam. The production of phenolic resin is its biggest use, accounting for more than half of phenol production.

Chemical properties

It appears as white sheet or molten substance. It is soluble in water, chlorinated solvents, petroleum hydrocarbons, cyclohexene, benzene, methanol, ethanol and ether.

Uses

(1) The majority of caprolactam is used in the production of polycaprolactam, of which about 90% is used for the production of synthetic fibers, that is, Kaplon, 10% used as plastic for the manufacture of gears, bearings, pipe, medical equipment and electrical, insulating materials. Also used in coatings, plastics and for the synthesis of lysine in a small amount and so on.
(2) Caprolactam is mainly used for the preparation of caprolactam resin, fiber and leather, also used as pharmaceutical raw materials.
(3) It can be used as polymer solvent, for the manufacture of polyamide-based synthetic fiber and the fixing phase of gas chromatography.

Production method

In 1943, the I.G. Farben AG Company, through the cyclohexanone-hydroxylamine synthesis (now referred to as the oxime), had first realized the industrial production of caprolactam. With the development of synthetic fiber industry, there have been successively toluene (ANIA), photo nitrosation (PNC), caprolactone (UCC), cyclohexane nitration and cyclohexanone nitration. The newly developed ammoxidation of cyclohexanone has attracted much attention because of its simplicity in the production of cyclohexanone oximation without the use of hydroxylamine.
1. Oxime method: first apply the high-purity cyclohexanone and hydroxylamine sulfate for condensation reaction at 80-110 °C to generate cyclohexanone oxime. The isolated cyclohexanone oxime is converted into crude caprolactam at 80-110°C via Beckmann Rearrangement reaction using sulfuric acid as catalyst, followed by extraction, distillation and crystallization to obtain high purity caprolactam.
The raw material cyclohexanone used in oxime method can be obtained from the hydrogenation of phenol to cyclohexanol, followed by dehydrogenation; alternatively by cyclohexane air oxidation into cyclohexanol and cyclohexanone with the separated cyclohexanol catalytic dehydrogenation generating ring Pentanone.
2. Toluene; toluene, under the effect of the cobalt oxide catalyst, can be subject to oxidation to generate benzoic acid which with liquid hydrogenation using the palladium catalyst on the activated carbon carrier to generate hexahydrobenzoic acid, which, in fuming sulfuric acid, reacts with nitrosyl sulfuric acid to generate caprolactam. Toluene method, due to that toluene is rich in resources with low production cost, has a certain development prospects.
3. Photo nitrosation method: cyclohexane, under the irradiation of the mercury vapor lamp can have photochemical reaction with chlorinated nitrosyl, further being direct converted into cyclohexanone oxime hydrochloride, which can be further converted into caprolactam by the Beckman rearrangement in the presence of fuming sulfuric acid.
4. Phenol method: phenol, in the presence of nickel catalyst, is subject to hydrogenation to obtain cyclohexanol with purification and dehydrogenation to generate crude cyclohexanone. Cyclohexanone, after being purified, can react with hydroxylamine to cyclohexanone oxime, followed by Beckmann shift to generate caprolactam. The sulfuric acid in the reaction product can neutralized with ammonia to generate by-product of thiamine. Crude caprolactam can be purified by a series of chemical and physical treatments to obtain pure caprolactam.

Hazards & Safety Information

Category Toxic substances:Toxic classification poisoning
Acute toxicity Oral-Rat LD50: 1210 mg/kg; Oral-mouse LD50: 930 mg/kg
Stimulation Data Skin-Rabbit 500 mg/24hours Mild; Eyes-Rabbit 20 mg/24hours Moderate
Explosives and Hazardous Characteristics: Mixture with acetic acid and nitrogen trioxide can be explosive
Flammability Hazardous characteristics: Thermal decomposition releases toxic nitrogen oxides
Storage and transport characteristics Treasury: low temperature, ventilated and drying
Extinguishing agent water, carbon dioxide, foam, dry powder
Occupational Standard TWA 1 mg/m3; STEL 3 mg/m3 (Dust, Steam)

Chemical Properties

Caprolactum is a white crystalline combustible solid with an unpleasant odor. The Odor Threshold is 0.3 milligram per cubic meter.

Chemical Properties

white crystals or flakes

Uses

manufacture of synthetic fibers of the polyamide type (Perlon); solvent for high mol wt polymers; precursor of nylon-6, q.v.

Definition

ChEBI: A member of the class of caprolactams that is azepane substituted by an oxo group at position 2.

Definition

A white crystalline substance used in the manufacture of NYLON.

General Description

Clear to milky white-colored solution with a mild, disagreeable odor. Contact may cause slight irritation to skin, eyes, and mucous membranes. May be mildly toxic by ingestion. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. As a liquid 2-Oxohexamethylenimine can easily penetrate the soil and contaminate groundwater and nearby streams. Used to make other chemicals.

Air & Water Reactions

Water soluble.

Reactivity Profile

2-Oxohexamethylenimine is hygroscopic. 2-Oxohexamethylenimine can react with strong oxidizing agents and strong bases. 2-Oxohexamethylenimine can also react with chlorinated hydrocarbons and nitro compounds. A potentially explosive reaction occurs with acetic acid + dinitrogen trioxide.

Hazard

Toxic by inhalation. Upper respiratory tract irritant.

Health Hazard

Inhalation causes coughing or mild irritation. Contact with hot liquid will burn eyes and skin.

Fire Hazard

Special Hazards of Combustion Products: Toxic oxides of nitrogen

Safety Profile

Moderately toxic by ingestion, skin contact, intraperitoneal, and subcutaneous routes. Human systemic effects by inhalation: nose and throat irritation, cough. Experimental reproductive effects. A skin and eye irritant. Potentially explosive reaction with acetic acid + dinitrogen trioxide. When heated to decomposition it emits toxic fumes of NOx

Potential Exposure

Caprolactam is used in the manufacture of nylon, plastics, bristles, film, coatings, synthetic leather, plasticizers, and paint vehicles; as a crossslinking agent for curing polyurethanes; and in the synthesis of lysine

First aid

If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomitquantities of water and induce vomiting. Do not make an unconscious person vomit

Shipping

UN2811 Toxic solids, organic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required

Purification Methods

The lactam is distilled under reduced pressure, recrystallised from acetone or pet ether and redistilled. It can be pur

Incompatibilities

Caprolactum decomposes on heating, and on burning producing toxic fumes including nitrogen oxides, ammonia. Reacts violently with strong oxidizers, producing toxic fumes. Toxic decomposition above 400C

Waste Disposal

Controlled incineration (oxides of nitrogen are removed from the effluent gas by scrubbers and/or thermal devices). Also, Caprolactam may be recovered from Caprolactam still bottoms or nylon waste

Caprolactam Preparation Products And Raw materials

Raw materials

Preparation Products


Caprolactam Suppliers

Global( 238)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Mainchem Co., Ltd.
+86-0592-6210733
+86-0592-6210733 sales@mainchem.com CHINA 32457 55
Xiamen AmoyChem Co., Ltd
+86 (0)592-605 1114
sales@amoychem.com CHINA 6374 58
Chemwill Asia Co.,Ltd.
86-21-51086038
86-21-51861608 chemwill_asia@126.com;sales@chemwill.com;chemwill@hotmail.com;chemwill@gmail.com CHINA 24001 58
Hubei Jusheng Technology Co.,Ltd.
86-188-71490254
peter@hubeijusheng.com CHINA 20095 58
Haihang Industry Co.,Ltd
86-531-88032799
+86 531 8582 1093 export@haihangchem.com CHINA 4669 58
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 20331 58
Wuhan Greatwall chemical Co,.LTD 400-027-6116 027-86647488
027-86647499 sales@chemgreatwall.com China 1721 55
Shandong Dong Ajinyuan Chemical Co., Ltd. 18963573761
18963573761 530335301@qq.com China 18 58
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933 jkinfo@jkchemical.com;market6@jkchemical.com China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) sh@meryer.com China 40277 62

View Lastest Price from Caprolactam manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2018-12-18 Caprolactam
105-60-2
US $1.00 / kg 1kg as customer's need 500kg career henan chemical co

Caprolactam Spectrum


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