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Styrene/Styrene Monomer stabilized cas no 617-89-0

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CAS No.:

617-89-0

Grade:

Industrial Grade

Content:

99%

Port:

qingdao

Brand:

hly

Packaging:

180kg galvanized steel drum, IBC tote tank

Price valid (until):

2027-02-28

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Suqian City Hengliyuan Import and Export Trade Co., LTD

Company Type:

Trader

Location:

China

Payment Terms:

TT against B/L draft before shipment,100% TT in advance

Average Lead Time:

30 days

Qualification:

Main Products:

Acrylonitrile,Sodium biselenite methylamine solution,Methylamine [anhydrous],Zinc dust,Hydrogen peroxide solution [content >8%],Triisopropyl borate

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Product Description
Seller Information

Description

Company Profile ----------
Suqian City Hengliyuan Import and Export Trade Co., LTD is a trading company. The company has introduced advanced scientific and technological achievements from home and abroad, and has superior products from well-known manufacturers at home and abroad. The basic functions are:
1. Domestic trade of various chemical raw materials;
2. Providing price information services and chemical raw material procurement for industrial enterprises;
3. Cooperating with Chinese state-owned enterprise factories, the price and quality are very advantageous.
At present, the company is relying on the combination of industry and trade and global procurement to steadily improve the company's value-added ability and compound competitiveness. We have always been committed to producing high-quality and low-cost goods, so we have been sincerely recognized by many customers. Our goal is to produce the best products and satisfy every customer with professional services and attitudes. We look forward to cooperating with you and establishing a win-win relationship with you. Please rest assured that we will definitely satisfy you.

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----------packaging and delivery ----------

----------Our Advantages---------
High quality with competitive price
1) Standard:BP/USP/EP/Enterprise standard
2) All Purity≥99%
3) We can provide high quality products with factory price
2. Fast delivery
1) Fast shipment.Various transportation methods for your choice.
2) We have our own agent/remailer/distributor who can help us ship our products very fast , and we have stock in the ir for transferring.
3. Good communication and credit
1) Fast response to customer within 5 hours
2) Good business credit in Europe, US, Japan, Korea, Af r ica and so on.

Complete Product Datasheet – Diethyl Malonate CAS 617-89-0

1. Basic Identification

CAS No.: 617-89-0

Chemical Name: Diethyl Malonate

IUPAC Name: Diethyl propanedioate

Synonyms: Malonic acid diethyl ester, DEM, Ethyl malonate

EINECS No.: 210-535-5

MDL No.: MFCD00009141

Molecular Formula: C₇H₁₂O₄

Structural formula: CH₂(COOCH₂CH₃)₂

Molecular Weight: 160.17

SMILES: CCOC(=O)CC(=O)OCC

UN No.: UN 3082

HS Code: 2917190090

Hazard Class: Class 9 Environmentally Hazardous Substance, PG III

Chemical Category: Aliphatic diester, classic active methylene organic synthesis intermediate

2. Physical & Chemical Properties

Appearance

Colorless transparent oily liquid, mild characteristic ester fruit odor, no turbidity or precipitate under sealed dry storage.

Physical Constants

Parameter	Value	Note
Melting point	-49 ℃	Never solidifies under normal warehouse temperature
Boiling point	198–199 ℃ (760 mmHg)	High boiling polar ester
Density (20 ℃)	1.055–1.058 g/mL	Slightly heavier than water
Refractive index n₂₀/D	1.413–1.415
Closed cup flash point	93 ℃	Non-highly flammable liquid
Autoignition temperature	440 ℃
Explosion limit in air	1.2% ~ 8.0 vol%
Vapor pressure (20 ℃)	0.04 mmHg	Low volatility
Water solubility	2.0 g/100mL (25℃)	Slightly soluble in cold water, miscible with hot water
Organic solubility	Fully miscible with ethanol, methanol, acetone, ethyl acetate, toluene, xylene, chloroform, DMF; slightly soluble in light alkane solvent

Core Chemical Characteristics

Active methylene (-CH₂-) between two carbonyl groups; hydrogen atoms have strong acidity (pKa ≈13), easy to form enolate anions under base catalysis, core for malonic ester synthesis reaction.
Classic malonic ester synthesis route: alkylation with alkyl halides, then hydrolysis + decarboxylation to synthesize substituted monocarboxylic acids.
Ester hydrolysis:
- Alkaline heating: Generate malonate salt; acidification obtains malonic acid
- Strong acid high temperature: Decarboxylation occurs, generates acetic acid derivatives
Condensation reaction: Knoevenagel condensation with aldehydes/ketones to form α,β-unsaturated diesters; Michael addition with α,β-unsaturated carbonyl compounds.
Transesterification: Exchange alkoxy group with other alcohols under acid/base catalyst to produce other malonate esters (dimethyl malonate, dibutyl malonate etc.)
Thermal stability: Stable below 180 ℃; slow decomposition above boiling point, release ethanol and carbon dioxide; incompatible with strong alkali, strong oxidants, strong reducing agents.

3. Export Industrial Quality Standard (Premium Grade ≥99.0%)

Test Item	Spec	Test Method
Diethyl Malonate Assay	≥99.0 %	GC Gas Chromatography
Monoethyl malonate impurity	≤0.30 %	GC
Ethanol residual	≤0.10 %	GC
Moisture content	≤0.10 %	Karl Fischer Titration
Free acid (calculated as malonic acid)	≤0.05 %	Potentiometric titration
Color (APHA/Hazen)	≤20	Platinum-Cobalt colorimetry
Distillation range (197–200 ℃)	≥95 vol%	Atmospheric distillation
Heavy metal (Pb, As)	≤10 ppm	AAS
Appearance	Colorless clear liquid without suspended matter	Visual inspection

High-Purity Pharma Grade (≥99.5%)

Ultra-low monoester impurity, moisture <50 ppm, heavy metal <1 ppm, anhydrous packaging for chiral drug & peptide intermediate synthesis.

4. Main Industrial Applications

4.1 Pharmaceutical & Peptide Synthesis (Core High-Value Field)

Malonic ester synthesis building block for carboxylic acid APIs: anti-inflammatory drugs, antibiotics, cardiovascular drugs, anti-tumor heterocyclic intermediates.
Knoevenagel condensation raw material for pyridine, pyrimidine, quinoline nitrogen-containing heterocyclic drug skeletons.
Side-chain modification reagent for amino acids & solid-phase peptide synthesis; prepare branched aliphatic carboxylic acid fragments.
Intermediate for vitamin B1, vitamin B6 synthesis.

4.2 Agrochemical Intermediates

Manufacture of herbicides, fungicides, insecticides; synthesize substituted carboxylic acid pesticide active ingredients via alkylation and decarboxylation.
Plant growth regulator intermediate, chelating auxiliary for pesticide formulation.

4.3 Dye & Pigment Intermediate

Condensation with aromatic aldehydes to produce coumarin fluorescent whitening agents for textile, paper and plastic brightening.
Raw material for azo dyes, disperse dyes and organic fluorescent pigments.

4.4 Fine Chemical & Coating Raw Material

Polyester resin monomer, crosslinking auxiliary for water-based baking coatings, improves coating hardness and weather resistance.
Synthesis of polyurethane chain extender, low-temperature plasticizer for PVC.
Synthesis of metal chelating agents, industrial water treatment scale inhibitors.

4.5 Laboratory Universal Organic Synthesis Reagent

Standard substrate for malonic ester synthesis teaching and research; widely used for alkylation, condensation, Michael addition reaction mechanism research.

5. Safety, Packaging, Storage & Transportation

GHS Hazard Classification

Skin Irritation Category 2
Serious Eye Damage Category 1
Chronic Aquatic Toxicity Category 4

Signal Word: Warning

Hazard Statements:

H315 Causes skin irritation

H318 Causes serious eye damage

H413 May cause long lasting harmful effects to aquatic life

Export Packaging

Bulk industrial grade: 200L lined anti-rust steel drum, PTFE sealed gasket
Medium batch: 25L plastic-lined iron drum
Pharma high-purity grade: Aluminum foil inner bag + light-proof iron drum, nitrogen-sealed
Trial order: 1L / 5L brown sealed glass bottle

Storage Requirements

Store in cool, dry, ventilated general chemical warehouse, temperature ≤30 ℃, tightly sealed to prevent volatile loss and moisture absorption.
Separate storage away from strong alkalis, strong oxidants, food raw materials and feed.
Equipped with ventilation, nitrile gloves, safety goggles and emergency eyewash station.
Shelf life: 12 months under original sealed packaging; re-test purity after expiration.

Transport Regulation

UN 3082, Class 9 environmentally hazardous dangerous goods, Packing Group III

Waterproof and light-proof during transit, avoid high temperature stacking and long-term sun exposure.
Forbid mixed loading with alkaline chemicals, edible raw materials, strong oxidants.
Complete export documents: COA, MSDS, TDS, marine dangerous goods declaration, REACH report.

6. E-commerce Listing Copy (Direct Use for Alibaba/Echemi)

Title

Diethyl Malonate Diethyl Propanedioate DEM CAS 617-89-0 99% Colorless Liquid Active Methylene Intermediate for Pharmaceutical API Peptide Coumarin Fluorescent Brightener Agrochemical

Short Description

Diethyl Malonate (C₇H₁₂O₄, CAS 617-89-0) ≥99% high-boiling ester liquid with active methylene group. Classic malonic ester synthesis raw material, widely used for pharmaceutical heterocyclic APIs, solid-phase peptide fragments, textile coumarin fluorescent whitening agents and agricultural fungicide intermediates. Full export documents COA, MSDS and TDS available for global bulk shipment.

Full Description

Diethyl Malonate (DEM, Diethyl propanedioate) with CAS No.617-89-0 is a vital active methylene diester fine chemical, supplied as colorless transparent liquid with GC purity ≥99.0%. Its acidic central methylene enables alkylation, Knoevenagel condensation and Michael addition, which is an irreplaceable core building block in multi-step organic synthesis.

Main downstream application sectors cover high-end pharmaceutical raw material for anti-inflammatory, cardiovascular and heterocyclic APIs; coumarin fluorescent whitening agent for textile and paper finishing; agricultural herbicide & fungicide intermediates; water-based coating crosslinker and laboratory standard synthesis reagent. We also supply 99.5% ultra-high purity pharmaceutical grade with ultra-low free acid and moisture for fine peptide and chiral drug production.

Products are packed in lined steel drums for full container sea shipment. Classified as UN3082 Class 9 environmentally hazardous goods, we provide complete customs clearance certification documents to support global sea and land delivery with stable continuous supply capacity.

7. Printable Export COA Template

CERTIFICATE OF ANALYSIS

Product Name: Diethyl Malonate (DEM)

CAS No.: 617-89-0

Grade: Export Premium Industrial Grade

Batch No.: ____________

Net Weight: 200kg/drum

Manufacture Date: ____________

Test Item	Standard Spec	Test Result	Test Method
Diethyl Malonate Assay	≥99.0 %		GC Gas Chromatography
Monoethyl Malonate Impurity	≤0.30 %		GC
Residual Ethanol	≤0.10 %		GC
Moisture Content	≤0.10 %		Karl Fischer Titration
Free Acid (as Malonic Acid)	≤0.05 %		Acid-Base Titration
Color (APHA)	≤20		Platinum-Cobalt Colorimetry
Appearance	Colorless clear liquid without sediment	Visual Inspection

Conclusion: This batch meets premium export industrial standard of Diethyl Malonate.

Inspector Signature: ____________

Testing Date: ____________

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ECHEMI Editorial Reference

Colorless to light yellow liqui
Furfurylamine appears as a colorless liquid. About the same density as water. Used as a corrosion inhibitor and to make soldering flux.|Liquid
Furfurylamine appears as a colorless liquid. About the same density as water. Used as a corrosion inhibitor and to make soldering flux.

Certificates

Basic Info

Product Name:

2-Furanmethanamine

Other Name:

2-Furanmethanamine;Furfurylamine;2-Furanmethylamine;2-(Aminomethyl)furan;2-Furfurylamine;α-Furfurylamine;(2-Furylmethyl)amine;(2-Furanylmethyl)amine;2-Furylmethanamine;NSC 49136;NSC 61168;(Furan-2-yl)methanamine;1-(2-Furanyl)methanamine;Furan-2-ylmethylamine;1057722-37-8

CAS No.:

617-89-0

Molecular Formula:

C5H7NO

InChIKeys:

InChIKey=DDRPCXLAQZKBJP-UHFFFAOYSA-N

Molecular Weight:

97.117

Exact Mass:

97.12

EC Number:

210-536-9

UNII:

86GAN59F7R

NSC Number:

61168|49136

UN Number:

2526

DSSTox ID:

DTXSID6052295

HScode:

2932190090

Categories:

Alcohols, Phenols, Phenol Alcohols

Characteristics

PSA:

39.2

XLogP3:

0.25

Appearance:

Furfurylamine appears as a colorless liquid. About the same density as water. Used as a corrosion inhibitor and to make soldering flux.

Density:

1.0533 g/cm³ @ Temp: 20 °C

Melting Point:

−70 °C(lit.)

Boiling Point:

145.5 °C

Flash Point:

99° F (NFPA, 2010)

Refractive Index:

1.497

Water Solubility:

H2O: soluble

Storage Conditions:

Keep Cold

Vapor Pressure:

4 mm Hg ( 20 °C)

Vapor Density:

3.35 (vs air)

Toxicity:

LD50 orally in Rabbit: 200 - 2000 mg/kg LD50 dermal Rat 100 mg/kg

Air and Water Reactions:

Highly flammable. Soluble in water.

Reactive Group:

Amines, Phosphines, and Pyridines

Reactivity Alerts:

Highly Flammable

Reactivity Profile:

Amines, such as FURFURYLAMINE, are chemical bases. They neutralize acids to form salts plus water. These acid-base reactions are exothermic. The amount of heat that is evolved per mole of amine in a neutralization is largely independent of the strength of the amine as a base. Amines may be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen is generated by amines in combination with strong reducing agents, such as hydrides.

See More 2-Furanmethanamine Properties 

Hazard Identification

Classification of the substance or mixture

Not classified.

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)	No symbol.
Signal word	No signal word
Hazard statement(s)	none
Prevention	none
Response	none
Storage	none
Disposal	none

Other hazards which do not result in classification

no data available

Handling and Storage

Precautions for safe handling

Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Conditions for safe storage, including any incompatibilities

Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.

See More 2-Furanmethanamine Safety Data Sheet 

Seller Information

Business Type:
Trader

Main Products:
Acrylonitrile,Sodium biselenite methylamine solution,Methylamine [anhydrous],Zinc dust,Hydrogen peroxide solution [content >8%],Triisopropyl borate

Location:
Shop No.15, 1st Floor, Building 12, Hengda Huafu, Sucheng District, Suqian City

Payment Terms:
TT against B/L draft before shipment,100% TT in advance

Average lead Time:
30 days

Total Annual Revenue:
Less than $1 million

Total Employees:
5-10

Year of Establishment:
2022
Company Overview

Suqian Hengliyuan Import and Export Corporation, Ltd. is a leading enterprise specializing in the international trade of chemical products. Established in Suqian, Jiangsu Province, China, our company has built a strong reputation for excellence and reliability in the chemical industry.

Our Mission

Our mission is to facilitate global trade by providing high-quality chemical products and exceptional service to our clients. We aim to be a bridge between manufacturers and end-users, ensuring the safe and efficient transfer of chemicals across borders.

Products and Services

We offer a comprehensive range of chemical products, including but not limited to:

Industrial Chemicals: Raw materials for various industries such as pharmaceuticals, agriculture, and manufacturing.

Specialty Chemicals: High-performance chemicals used in specific applications, including water treatment, coatings, and adhesives.

Bulk Chemicals: Large-volume chemicals for industrial processes and manufacturing needs.

Quality Assurance

At Suqian Hengliyuan Import and Export Corporation, Ltd., quality is our top priority. We adhere to stringent quality control measures and international standards to ensure that our products meet the highest levels of purity and performance. Our dedicated quality assurance team conducts rigorous inspections and testing to guarantee the integrity and safety of all our chemical products.

Global Network

Leveraging our extensive network of suppliers and partners, we are able to source and deliver a wide array of chemical products to clients worldwide. Our strategic partnerships and logistical expertise enable us to offer competitive pricing, timely delivery, and customized solutions to meet the diverse needs of our clients.

Commitment to Sustainability

We are committed to sustainable business practices and environmental stewardship. Our operations are designed to minimize environmental impact, and we continuously seek ways to improve our processes and reduce our carbon footprint. We work closely with our suppliers and customers to promote the responsible use and disposal of chemicals.

Customer Focus

Our clients are at the heart of everything we do. We pride ourselves on providing personalized service and building long-term relationships based on trust and mutual benefit. Our experienced team of professionals is dedicated to understanding our clients' needs and delivering solutions that exceed their expectations.
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