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Morpholine

Product Features Chemical properties Uses metal corrosion inhibitors rubber vulcanization accelerator quantitative analysis Production method Hazards & Safety Information
Morpholine
Morpholine
CAS No.
110-91-8
Chemical Name:
Morpholine
Synonyms
basf238;NA 2054;BASF 238;Drewamine;MORPHOLIN;Morpholine;1,4-Oxazinan;Morpholine (B);MORPHOLINE, ACS;Morpholine ,98%
CBNumber:
CB9241419
Molecular Formula:
C4H9NO
Formula Weight:
87.12
MOL File:
110-91-8.mol

Morpholine Properties

Melting point:
-5 °C
Boiling point:
129 °C(lit.)
Density 
1.000 g/mL at 20 °C
vapor density 
3 (vs air)
vapor pressure 
31 mm Hg ( 38 °C)
refractive index 
n20/D 1.454(lit.)
Flash point:
96 °F
storage temp. 
Store at R.T.
solubility 
water: miscible
form 
Liquid
pka
8.33(at 25℃)
color 
APHA: ≤15
PH
11.2 (H2O)(undiluted)
explosive limit
1.4-15.2%(V)
Water Solubility 
MISCIBLE
FreezingPoint 
-4.9℃
Sensitive 
Hygroscopic
Merck 
14,6277
BRN 
102549
Stability:
Stable. Flammable. Incompatible with strong oxidizing agents, strong acids, acid chlorides, acid anhydrides. Hygroscopic.
InChIKey
YNAVUWVOSKDBBP-UHFFFAOYSA-N
CAS DataBase Reference
110-91-8(CAS DataBase Reference)
NIST Chemistry Reference
Morpholine(110-91-8)
EPA Substance Registry System
Morpholine(110-91-8)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  C
Risk Statements  10-20/21/22-34
Safety Statements  23-36-45
RIDADR  UN 2054 8/PG 1
WGK Germany  3
RTECS  QD6475000
TSCA  Yes
HazardClass  8
PackingGroup  I
Hazardous Substances Data 110-91-8(Hazardous Substances Data)
Toxicity LD50 orally in female rats: 1.05 g/kg (Smyth)
Symbol(GHS):
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H226 Flammable liquid and vapour Flammable liquids Category 3 Warning
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
H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H332 Harmful if inhaled Acute toxicity,inhalation Category 4 Warning P261, P271, P304+P340, P312
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P370+P378 In case of fire: Use … for extinction.
P405 Store locked up.

Morpholine price More Price(23)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 134236 Morpholine ReagentPlus , ≥99% 110-91-8 100ml $28.5 2018-11-13 Buy
Sigma-Aldrich 134236 Morpholine ReagentPlus , ≥99% 110-91-8 2.5l $146 2018-11-13 Buy
TCI Chemical M0465 Morpholine >99.0%(GC)(T) 110-91-8 25mL $14 2017-12-01 Buy
TCI Chemical M0465 Morpholine >99.0%(GC)(T) 110-91-8 500mL $24 2017-12-01 Buy
Alfa Aesar 031984 Morpholine, ACS, 99.0% min 110-91-8 500g $67.6 2018-11-16 Buy

Morpholine Chemical Properties,Uses,Production

Product Features

Morpholine, also known as 1, 4-oxazepine and diethylenimine oxide, is a kind of colorless alkaline oily liquid. It smells of ammonia and has hygroscopicity. Morpholine could evaporate with water vapor and miscible with water. It is Soluble in acetone, benzene, ether, pentane, methanol, ethanol, carbon tetrachloride, propylene glycol and other organic solvents. Morpholine Vapor could form an explosive mixture with air and the explosion limit is 1.8% to 15.2% (volume fraction). Morpholine is a secondary amine, and at the same time it has the property of inorganic acid and organic acid, so that it can generate salt and amide.
Morpholine contains secondary amine groups and it has all the typical reaction characteristics of the secondary amine groups. It can react with inorganic acid to form a salt, and also can react with organic acid to form salt or amide. Morpholine can carry out alkylation reactions and it also carry out ketone reaction or Willgerodt reaction with ethylene oxide. Because of the unique chemical properties of morpholine, it has become one of the important petrochemical products with important commercial application. It can be applied to produce rubber vulcanization accelerators such as NOBS, DTOS and MDS. And it is also applied to produce anti-corrosives, anti-corrosion agents, detergents, detergents, analgesics, local anesthetics, sedatives, respiratory and vascular stimulants, surfactants, optical bleach, fruit preservatives, and textile dyeing auxiliaries. Morpholine also has a wide range of applications in the field of rubber, pharmaceuticals, pesticides, dyes, coatings and other industries. In medication it could be applied in the production of morpholine guanidine, virus Ling, ibuprofen, cough must, naproxen, dichloroaniline, sodium phenylacetate and other important drugs.
The two main production method of morpholine are DEA method (diethanolamine method) and DEA method (diethylene glycol method)
It is noteworthy that new polymer monomer acrylic morpholine has obtained a rapid development in recent years. Acrylic acid morpholine could be produced from the reaction between acrylic acid and morpholine. And acrylic acid morpholine is a kind of water-soluble monomer, and it is still water-soluble after the polymerization. So it could be applied for the modification of aqueous polymers. Besides, acrylic morpholine is widely used as a reactive diluent for UV curable resins. With the deepening of applied research, many new specific uses have been developed and it becomes polymer monomer with rapid development.
the morpholine structure
Figure 1 for the morpholine structure

Chemical properties

It is colorless water-absorbing oily liquid and it smells ammonia. It is soluble in water and methanol, ethanol, benzene, acetone, ether, ethylene glycol and other commonly used solvents.

Uses

(1) For medicine, it used as the raw materials for rubber accelerator and fluorescent whitening agent.
(2) Morpholine is the intermediates of fungicide dimethomorph and flumorpholine and organophosphate insecticide phosalphos.
(3) Morpholine is Mainly used for the production of rubber vulcanization accelerator, but also for surfactant, textile auxiliaries, pharmaceuticals, pesticide synthesis. (4) Morpholine also used as a catalyst for polymerization of butadiene, corrosion inhibitors, optical bleach, the goods are dyes, resins, wax, early glue, casein and other solvents. At present, the total production of morpholine in the world is 3-4 million t/a.
(5) Morpholine salts are also widely used. Morpholine salts like morpholine hydrochloride (10024-89-2) are the organic synthesis of intermediates. Morpholine fatty acid salt can be used as the coating agent of fruits or vegetables epidermal coating agent, and it could inhibit the base respiration and prevent the epidermis from evaporation of water and epidermal atrophy.
(6) Morpholine is the main raw materials of accelerator NOBS. for analysis reagents and resins, wax, shellac and other solvents, used in the production of sodium sulfate. Water glass and ultramarine. Also used in the manufacture of glass. Paper. Detergent. Soap. Dye. Synthetic fiber. Tanning. Medicine and ceramics industries. Analysis reagents, such as nitrogen determination, dehydrating agent.
(7) Morpholine is used for the analysis of reagents and resins, wax, casein, shellac and a variety of solvents solvent.
(8) Morpholine could produce salt after reacting with inorganic acid, and it also could produce salt or amide after reacting with organic acid. It also can be alkylated, and it also could come up a ketone reaction or Willgerodt reaction with ethylene oxide.

metal corrosion inhibitors

As a kind of metal corrosion inhibitor, Morpholine is mainly applied for the anti-corrosion of iron, copper, zinc, lead and other metals. It remains at its starting stage in China, but outside the country, a considerable proportion of Morpholine are used as a kind of anti-rust agent for metal gas to prevent the metal corrosion caused by atmosphere and it has been widely used in the field of mechanical instruments, automobiles, medical equipment and others. The metal atmospheric rust inhibitor used earlier such as dicyclohexylamine nitrite and cyclohexylamine do harm to the human body and they are more environmentally toxic. Instead, morpholine as a metal gas-liquid corrosion inhibitor, it has the advantages of low toxicity, so the foreground is prosperous.

rubber vulcanization accelerator

Before 1990's, in Europe, the United States, Japan and other developed areas, the consumption of rubber vulcanization accelerator accounted for more than 50% of the total demand for morpholine. At present, more than 30% consumption of rubber vulcanization accelerator is used for NOBS.
In recent years, the toxicity issue of the harmful nitrosamines in the accelerator which produced during rubber processing is driving more attention internationally. A number of restrictive laws and regulations are introduced all around the world. For example, in Germany as early as 1982, the law about the regulations issued nitrosamine content control was established. The United States, Japan, France, the United Kingdom actively developed new vulcanization accelerator which don’t produce nitrosamine, and they have stopped using nitrosamine which will produce vulcanization accelerator. Therefore, the consumption of morpholine in foreign countries has decreased with banning of the accelerator NOBS year by year. In China however, we have no corresponding regulations prohibited about banning accelerator NOBS. But China has joined the WTO, due to a large number of foreign enter and high requirement about additives localization, it requires more environmental protection in China's rubber vulcanization accelerator. Using non-toxic promoter and replacing NOBS becomes the general trend. China's demand for NOBS is significantly reduced in recent years. China will no longer use basic decomposition of nitrosamine secondary amine accelerator. As the main substitute of NOBS, NS (N-tert-butyl-2-benzothiazole sulfonamide), which does not produce nitrosamines, has a large production capacity. In 2005, the output was 14,000 tons and it is 10.1%, of the total amount. So there was good development momentum.

quantitative analysis

Get 4 parts of methanol solution with 0.1% of bromocresol green and 1 part of 0.1% aqueous solution with 0.1% of methyl red sodium salt. Mix them and put aside to use as a mixed indicator later.
Get 50ml water in 250ml flask, add 0.4ml mixed indicator, drop 0.1moI/L hydrochloric acid, and wait for the color to turn green. Accurately weighs the sample 1.4~1.6g, add the flask and mix it. Use 0.5mol/L hydrochloric acid titration and wait for the color to turn green. Per ml, 0.5mol/L hydrochloric acid is equivalent to 43.56mg C4H9NO.

Production method

(1) Morpholine could be produced by diethanolamine dehydration cyclization derived from sulfuric acid. Add diethanolamine to the water reaction pot and drop sulfuric acid in the temperature of 60 ℃, then when the temperature heat at 185-195 ℃, incubate it for 30min. Cool it to under 60℃ and drop sodium hydroxide solution to pH = 11. The next steeps are cooling, filtering, filtrating distillation, collecting the following fractions below 130℃. The content of spermine is suppose to reach more than 99.5%. The method is easy to obtain raw materials, so it has become the main method of producing morpholine in the world. Morpholine also could be produced in the catalytic reaction between dioxane and ammonia gas.
(2) The preparation method is that we could get Morpholine from the presence of sulfuric acid dehydration cyclization diethanolamine In the presence of sulfuric acid ; then add diethanolamine into the reaction kettle and add H2SO4 at a temperature of below 6 °C, then heat it to 185-195 °C for 30 minutes, cool to 60 °C. Drop NaOH solution to pH = 11, and the last two steeps is cooling and filtrating. Morpholine could be collected from the fraction below 130 °C.
We can also get morpholine from the reaction between diethylene glycol and ammonia in the presence of catalyst and pressure. The method is easy to obtain raw materials, thus it is the main method of producing morpholine around the world.

Hazards & Safety Information

category: Flammable liquids
toxicity grading: Poisoning
acute toxicity: Oral-rat LD 50: 1050 mg/kg; oral-mouse LD 50: 525 mg/kg
Stimulating data: Skin-rabbit 995 mg/24 h  severe; eye –rabbit  2 mg  severe.
hazardous characteristic of explosive: Will cause explosion when it mixes with steam and air
hazardous characteristic of flammability: Flammable; combustion produces toxic chloride gas
transportation and storing properties: Store it in low temperature, dry and ventilated environment. Prevent from fire, friction,spark and Separated from oxidant
extinguishant: Water spray, dry chemical powder, foam or carbon dioxide
occupational standards: TLV-TWA 70 mg/m3  STEL 105 mg/m3

Chemical Properties

Yellow liquid

General Description

An aqueous solution with a fishlike odor. Corrosive to tissue and moderately toxic by ingestion and inhalation.

Air & Water Reactions

Highly flammable. Water soluble.

Reactivity Profile

MORPHOLINE dissolved in water neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen may be generated in combination with strong reducing agents, such as hydrides.

Health Hazard

May cause toxic effects if inhaled or ingested/swallowed. Contact with substance may cause severe burns to skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.

Fire Hazard

Flammable/combustible material. May be ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.

Purification Methods

Dry morpholine with KOH, fractionally distil it, then reflux it with Na, and again fractionally distil it. Dermer & Dermer [J Am Chem Soc 59 1148 1937] precipitated it as the oxalate by adding slowly to slightly more than 1 molar equivalent of oxalic acid in EtOH. The precipitate is filtered off and recrystallised twice from 60% EtOH [1:1 salt has m 190-195o(dec)]. Addition of the oxalate to concentrated aqueous NaOH regenerated the base, which is separated and dried with solid KOH, then sodium, before being fractionally distilled. The hydrochloride has m 178-179o (from MeOH/Et2O), and the picrate has m 151.6o (from aqueous EtOH). [Beilstein 27 II 3, 27 III/IV 15.]

Morpholine Preparation Products And Raw materials

Raw materials

Preparation Products


Morpholine Suppliers

Global( 302)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Mainchem Co., Ltd.
+86-0592-6210733
+86-0592-6210733 sales@mainchem.com CHINA 32764 55
Hangzhou FandaChem Co.,Ltd.
0086 158 5814 5714 (Mobile; WhatsApp; Telegram)
+86-571-56059825 fandachem@gmail.com CHINA 1885 55
Capot Chemical Co.,Ltd.
+86 (0)571-855 867 18
+86 (0)571-858 647 95 sales@capotchem.com China 19954 60
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
inquiry@dakenchem.com CHINA 22128 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 20795 55
Shanghai Time Chemicals CO., Ltd.
+86-021-57951555
+86-021-57951555 jack.li@time-chemicals.com CHINA 1374 55
Anhui Royal Chemical Co., Ltd.
+86-025-86736275
dana.jiang@royal-chem.com CHINA 789 55
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 info@tnjchem.com China 1465 55
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 10011 58
Yancheng Green Chemicals Co.,Ltd
86-515-87883661
86-515-87883652 sales@greenchem-china.com CHINA 116 58

View Lastest Price from Morpholine manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2018-08-15 Morpholine
110-91-8
US $1.00 / KG 1G 98% 100KG

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