Changzhou Jufeng Chemical Co., Ltd.--N,N-dimethylformamide(DMF)

PRODUCTS

Jufeng Chemical

PRODUCTS

Monomethylamine

Dimethylamine

Trimethylamine

N,N-dimethylformamide(DMF)

Methylamine aqueous solution

Methylamine gas for experiment

800L methylamine gas for indus

Industrial pure water

N,N-dimethylformamide(DMF)

Product index

DMF product index
Index name	Index		Analysis result
Index name	Unit	Technical index	2020.11.05
Dimethylformamide	wt-%	≥99.9	99.99
Methanol	wt-%	≤0.005	-
Water content	wt-%	≤0.03	0.006
Alkali, as dimethylamine	mg/kg	≤10	2
Acid, as formic acid	mg/kg	≤10	2
Platinum-cobalt chromaticity	APHA	≤10	5

Uses: Dimethylformamide products are not only a very versatile chemical raw material, but also a very versatile and excellent solvent. It can be used for wet spinning of synthetic fibers such as polyacrylonitrile fiber and synthesis of polyurethane; used for plastic film making; also used as a paint stripper for removing paint; it can also dissolve some low-solubility pigments, so that the pigments have Characteristics of dyes. In the petrochemical industry, it can be used as a gas absorbent to separate and produce sandworms; in medicine, it can be used to synthesize iodosamine, doxycycline, cortisone, vitamin B6, iodoside, repellent, pyrantel, N-methylacyl lysate sarcoma, anti-tumor acid, methoxine, chlorambucil, cylohexine nitrosourea, furfurouracil, tranexamic acid, betamethasone, megestrol, biliary He, chlorpheniramine and so on. It can also be used in product purification and gas analysis.

Properties: colorless liquid. The melting point is -61°C, the boiling point is 153°C, the relative density is 0.9487 (20/4°C), and the refractive index is 1.4304. The flash point is 57°C. It can be miscible with water, ethanol, ether, chloroform and most organic solvents, and has good solubility and chemical stability for a variety of organic and inorganic compounds. The vapor pressure at 25°C is 0.493 kPa.

Technical manual

Technical specification code	224
CAS No.	68-12-2
Molecular formula	C₃H₇NO
Molecular weight	73.10

Physical and chemical properties

Main ingredients	Pure	Critical temperature (℃)	374
Appearance and traits	Colorless liquid	Critical pressure (MPa)	4.48
pH		Log value of octanol/water partition coefficient	-0.87
Melting point (℃)	-61	Flash point (℃)	58
Boiling point (℃)	152.8	Ignition temperature (℃)	445
Relative density (water = 1)	0.94	Upper explosion limit %(V/V)	15.2
Relative vapor density (air=1)	2.51	Lower explosion limit %(V/V)	2.2
Saturated vapor pressure (kPa)	3.46(60℃)	Solubility	Miscible with water, miscible with most organic solvents.
Combustion heat (kJ/mol)	1915	Use	It is mainly used as an industrial solvent, in the pharmaceutical industry for the production of vitamins and hormones, and also for the manufacture of insecticide.

Toxicology Information

Acute toxicity	LD50: 4000 mg/kg (rat oral); 4720 mg/kg (rabbit skin) LC50: 9400mg/m3, 2 hours (mouse Inhale)
Subacute and chronic toxicity
Irritating
Sensitization
Mutagenicity
Teratogenicity
Carcinogenicity

Ecological information

Ecological Toxicity
Biodegradability
Non-biodegradability
Bioaccumulation or bioaccumulation
Other harmful effects	This substance may be harmful to the environment, so special attention should be paid to water bodies.

Transport information

Dangerous Goods Number	33627
UN number	2265
Packaging logo
Packing category	O53
Packing method	Common wooden boxes outside ampoules; common wooden boxes outside screw-top glass bottles, iron-capped glass bottles, plastic bottles or metal barrels (cans).
Transport considerations	Transport vehicles should be equipped with corresponding types and quantities of fire-fighting equipment and leakage emergency treatment equipment during transportation. It is best to transport sooner or later in summer. The tank (tank) truck used for transportation should have a grounding chain, and a hole partition can be set in the tank to reduce vibration and static electricity. Mixed shipment and transportation with oxidants, reducing agents, halogens, edible chemicals, etc. are strictly prohibited. Avoid exposure to the sun, rain, and high temperature during transportation. Stay away from fire, heat sources, and high-temperature areas during stopovers. The exhaust pipe of the vehicle carrying the item must be equipped with a fire arrester, and it is forbidden to use mechanical equipment and tools that are prone to sparks for loading and unloading. When transporting by road, follow the prescribed route and do not stop in residential areas and densely populated areas. It is forbidden to drop off during railway transportation. It is strictly forbidden to transport in bulk by wooden ships or cement ships.

Regulatory Information

Regulatory Information

Regulations on the Safety Management of Chemical Hazardous Materials (promulgated by the State Council on February 17, 1987), Implementation Rules for the Regulations on the Safety Management of Chemical Hazardous Materials (Hua Lao Fa [1992] No. 677), Regulations on the Safe Use of Chemicals in Workplaces ([1996] issued by the Ministry of Labor No. 423) and other regulations have made corresponding regulations for the safe use, production, storage, transportation, loading and unloading of chemical dangerous goods; the classification and marking of commonly used dangerous chemicals (GB 13690-92) classifies this substance as section 3.3 Class high flash point flammable liquid.

Risk overview

Risk category	Class 3.3 high flash point flammable liquid
Entry route	Inhalation, ingestion, transdermal absorption
Health hazard	Acute poisoning: mainly eye and upper respiratory tract irritation, headache, anxiety, nausea, vomiting, abdominal pain, constipation, etc. Liver damage usually occurs a few days after poisoning, and the liver is enlarged.
Environmental hazards
Explosion hazard	This product is flammable and irritating.

First-aid

Risk category	Class 3.3 high flash point flammable liquid
Entry route	Inhalation, ingestion, transdermal absorption
Health hazard	Acute poisoning: mainly eye and upper respiratory tract irritation, headache, anxiety, nausea, vomiting, abdominal pain, constipation, etc. Liver damage usually occurs a few days after poisoning, and the liver is enlarged.
Environmental hazards
Explosion hazard	This product is flammable and irritating.

Fire-fighting measures

Hazardous characteristics	It is flammable, and may cause combustion and explosion when exposed to open flames, high heat or contact with oxidants. It can react violently with concentrated sulfuric acid and fuming nitric acid, and even explode. It can react strongly with halides (such as carbon tetrachloride).
Hazardous combustion products	Carbon monoxide, carbon dioxide, nitrogen oxides.
Fire fighting methods	Move the container from the fire scene to an open place as much as possible. Spray water to keep the fire container cool until the end of the fire extinguishing. Extinguishing agent: water mist, alcohol-resistant foam, dry powder, carbon dioxide, sandy soil.

Leakage emergency treatment

Emergency treatment

Quickly evacuate personnel from the contaminated area to a safe area, isolate them, and strictly restrict access. Cut off the fire source. It is recommended that emergency personnel wear self-contained positive pressure breathing apparatus and chemical protective clothing. Cut off the source of leakage as much as possible. Prevent entry into restricted spaces such as sewers and flood drains. Small leakage: Use sand or other non-combustible materials to absorb or absorb. It can also be washed with a lot of water, and the washing water is diluted and put into the waste water system. A large number of leaks: construct a dike or dig a pit for storage.

Operational disposal

Operation precautions

Airtight operation, full ventilation. Operators must undergo special training and strictly abide by the operating procedures. It is recommended that operators wear filter-type gas masks (half masks), chemical safety glasses, chemical protective clothing, and rubber gloves. Keep away from fire and heat sources, and smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. Prevent the vapor from leaking into the air in the workplace. Avoid contact with oxidants, reducing agents and halogens. The flow rate of the filling should be controlled to prevent the accumulation of static electricity. When handling, please load and unload with care to prevent damage to packaging and containers. Equipped with corresponding types and quantities of fire-fighting equipment and leakage emergency treatment equipment. Empty containers may be harmful residues.

Storage precautions

Store in a cool, ventilated warehouse. Keep away from fire and heat sources. Keep the container tightly closed. It should be stored separately from oxidants, reducing agents, halogens, etc., and avoid mixed storage. Use explosion-proof lighting and ventilation facilities. It is forbidden to use mechanical equipment and tools that are prone to sparks. The storage area should be equipped with leakage emergency treatment equipment and suitable storage materials.

Occupational exposure limit
China MAC (mg/m3)	10
Former Soviet Union MAC (mg/m3)	No standard
TLVTN	OSHA 10ppm,30mg/m3; ACGIH 10ppm,30mg/m3
TLVWN	No standard
Monitoring method	Gas chromatography; hydroxylamine-iron oxide spectrophotometry.
Engineering control	The production process is closed and fully ventilated. Provide safety shower and eyewash equipment.
Respiratory protection	When the concentration in the air exceeds the standard, wear a filter gas mask (half mask).
Eye protection	Wear chemical safety glasses.
Body protection	Wear chemical protective clothing.
Hand protection	Wear rubber gloves。
Other protection	Smoking is strictly prohibited at the work site. After work, take a shower.

Stability and reactivity

Stability
Incompatible materials	Strong oxidizer, acid chloride, chloroform, strong reducing agent, halogen, chlorinated hydrocarbon.
Conditions to avoid
Aggregation hazard
Decomposition products

Disposal

Nature of waste
Disposal methods	Dispose of by incineration. After being mixed with fuel, it is incinerated. The nitrogen oxides discharged from the incinerator are removed by the scrubber.
Disposal considerations

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