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  • Dimethyl acetylenedicarboxylate 762-42-5
Name:Dimethyl acetylenedicarboxylate 762-42-5
CAS No:762-42-5

PRODUCT DESCRIPTION

Names and Identifiers
Synonyms

dimethyl butynedioateDIMETHYL ACETYLENEDICARBOXYLATE (DMADC)Dimethyl acetylenedicarboxylateDMADAcetylenedicarboxylic acid dimethyl ester~Butynedioic acid dimethyl ester~DMAD

Inchi
InChI=1/C6H6O4/c1-9-5(7)3-4-6(8)10-2/h1-2H3
InChkey
VHILMKFSCRWWIJ-UHFFFAOYSA-N
Canonical Smiles
COC(=O)C#CC(=O)OC
Properties
Appearance
clear colorless to light yellow liquid
Density
1.16
Melting Point
-18℃
Boiling Point
95-98℃ (19 mmHg)
Refractive Index
1.446-1.448
Flash Point
86℃
Solubilities
Slightly soluble
Stability
Stable under normal temperatures and pressures.
HS Code
29171990
Storage temp
Keep away from heat, sparks, and flame. Store in a cool, dry place. Store in a tightly closed container. Corrosives area.
Safety and Handling
Hazard Codes
C
Risk Statements
R22;R34
Safety Statements
S26;S36/37/39;S45
HazardClass
8
Safety

Poison by ingestion. A dienophile. Explosive reaction with 1-methylsilacyclopenta-2,4-diene at 150°C. Octakis(trifluorophosphine)dirhodium catalyzes explosive polymerization of the acid above 20°C. When heated to decomposition it emits acrid smoke and irritating fumes.
Hazard Codes:?Corrosive
Risk Statements: 34-22?
R34: Causes burns.?
R22: Harmful if swallowed. 
Safety Statements: 23-26-27-36/37/39-45?
S23: Do not breathe vapour.?
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.?
S27: Take off immediately all contaminated clothing.?
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.) 
RIDADR: UN 3265 8/PG 2 
WGK Germany: 3
RTECS: ES0175000
F: 8-19 
HazardClass: 8 
PackingGroup? of Dimethyl acetylenedicarboxylate (CAS NO.762-42-5): III

Pack up
PackingGroup
III
Sensitive
Light Sensitive
Transport
UN 3265
Specification

?Dimethyl acetylenedicarboxylate (CAS NO.762-42-5), its Synonyms are Acetylenedicarboxylic acid dimethyl ester ;? 2-Butynedioic acid, 1,4-dimethyl ester ; 2-Butynedioic acid, dimethyl ester ; 1,2-Bis(methoxycarbonyl)acetylene ; Bis(methoxycarbonyl)acetylene . It is clear colorless to light yellow liquid.

Report

Reported in EPA TSCA Inventory.

Reach Info
This substance has been officially registered by enterprises.
ECHA (EU chemicals Management Agency) published the completed registration file as follows:
Completed registration file:
Registered as ubmitted Total tonnage band  
INTERMEDIATE JOINT INTERMEDIATE_USE_ONLY view >
Registered companies:
Registrant / Supplier details Latest dossier received
F.I.S. Fabbrica Italiana Sintetici S.p.a. 2016
more >
MSDS

 Download/Modify | Technical supported by XiXisys.com. For US version, EU version (23 languages) and more, please refer to xixisys.com/en/sds/search

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1GHS Product identifier

Product name Dimethyl acetylenedicarboxylate

1.2Other means of identification

Product number -
Other names 2-Butynedioic acid, dimethyl ester

1.3Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4Supplier's details

Company

Fax

1.5Emergency phone number

Emergency phone number
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

2.Hazard identification

2.1Classification of the substance or mixture

Acute toxicity - Oral, Category 4

Skin corrosion, Category 1B

2.2GHS label elements, including precautionary statements

Pictogram(s)  
Signal word

Danger

Hazard statement(s)

H302 Harmful if swallowed

H314 Causes severe skin burns and eye damage

Precautionary statement(s)
Prevention

P264 Wash ... thoroughly after handling.

P270 Do not eat, drink or smoke when using this product.

P260 Do not breathe dust/fume/gas/mist/vapours/spray.

P280 Wear protective gloves/protective clothing/eye protection/face protection.

Response

P301+P312 IF SWALLOWED: Call a POISON CENTER/doctor/u2026if you feel unwell.

P330 Rinse mouth.

P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.

P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower].

P363 Wash contaminated clothing before reuse.

P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.

P310 Immediately call a POISON CENTER/doctor/u2026

P321 Specific treatment (see ... on this label).

P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Storage

P405 Store locked up.

Disposal

P501 Dispose of contents/container to ...

2.3Other hazards which do not result in classification

none

3.Composition/information on ingredients

3.1Substances

Chemical name Common names and synonyms CAS number EC number Concentration
Dimethyl acetylenedicarboxylate Dimethyl acetylenedicarboxylate 762-42-5 none 100%

4.First-aid measures

4.1Description of necessary first-aid measures

General advice

Consult a physician. Show this safety data sheet to the doctor in attendance.

If inhaled

If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician.

In case of skin contact

Wash off with soap and plenty of water. Consult a physician.

In case of eye contact

Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician.

If swallowed

Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.

4.2Most important symptoms/effects, acute and delayed

no data available

4.3Indication of immediate medical attention and special treatment needed, if necessary

no data available

5.Fire-fighting measures

5.1Extinguishing media

Suitable extinguishing media

Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.

5.2Specific hazards arising from the chemical

no data available

5.3Special protective actions for fire-fighters

Wear self-contained breathing apparatus for firefighting if necessary.

6.Accidental release measures

6.1Personal precautions, protective equipment and emergency procedures

Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. For personal protection see section 8.

6.2Environmental precautions

Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided.

6.3Methods and materials for containment and cleaning up

Pick up and arrange disposal. Sweep up and shovel. Keep in suitable, closed containers for disposal.

7.Handling and storage

7.1Precautions for safe handling

Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Avoid exposure - obtain special instructions before use.Provide appropriate exhaust ventilation at places where dust is formed. For precautions see section 2.2.

7.2Conditions for safe storage, including any incompatibilities

Store in cool place. Keep container tightly closed in a dry and well-ventilated place.

8.Exposure controls/personal protection

8.1Control parameters

Occupational Exposure limit values

no data available

Biological limit values

no data available

8.2Appropriate engineering controls

Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday.

8.3Individual protection measures, such as personal protective equipment (PPE)

Eye/face protection

Safety glasses with side-shields conforming to EN166. Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).

Skin protection

Wear impervious clothing. The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique(without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it.

Respiratory protection

Wear dust mask when handling large quantities.

Thermal hazards

no data available

9.Physical and chemical properties

Physical state clear colorless to light yellow liquid
Colour no data available
Odour no data available
Melting point/ freezing point 145u00b0C(dec.)(lit.)
Boiling point or initial boiling point and boiling range 198u00b0C(lit.)
Flammability no data available
Lower and upper explosion limit / flammability limit no data available
Flash point 86u00b0C(lit.)
Auto-ignition temperature no data available
Decomposition temperature no data available
pH no data available
Kinematic viscosity no data available
Solubility no data available
Partition coefficient n-octanol/water (log value) no data available
Vapour pressure no data available
Density and/or relative density 1.16
Relative vapour density no data available
Particle characteristics no data available

10.Stability and reactivity

10.1Reactivity

no data available

10.2Chemical stability

Stable under recommended storage conditions.

10.3Possibility of hazardous reactions

no data available

10.4Conditions to avoid

no data available

10.5Incompatible materials

no data available

10.6Hazardous decomposition products

no data available

11.Toxicological information

Acute toxicity

  • Oral: no data available
  • Inhalation: no data available
  • Dermal: no data available

Skin corrosion/irritation

no data available

Serious eye damage/irritation

no data available

Respiratory or skin sensitization

no data available

Germ cell mutagenicity

no data available

Carcinogenicity

no data available

Reproductive toxicity

no data available

STOT-single exposure

no data available

STOT-repeated exposure

no data available

Aspiration hazard

no data available

12.Ecological information

12.1Toxicity

  • Toxicity to fish: no data available
  • Toxicity to daphnia and other aquatic invertebrates: no data available
  • Toxicity to algae: no data available
  • Toxicity to microorganisms: no data available

12.2Persistence and degradability

no data available

12.3Bioaccumulative potential

no data available

12.4Mobility in soil

no data available

12.5Other adverse effects

no data available

13.Disposal considerations

13.1Disposal methods

Product

The material can be disposed of by removal to a licensed chemical destruction plant or by controlled incineration with flue gas scrubbing. Do not contaminate water, foodstuffs, feed or seed by storage or disposal. Do not discharge to sewer systems.

Contaminated packaging

Containers can be triply rinsed (or equivalent) and offered for recycling or reconditioning. Alternatively, the packaging can be punctured to make it unusable for other purposes and then be disposed of in a sanitary landfill. Controlled incineration with flue gas scrubbing is possible for combustible packaging materials.

14.Transport information

14.1UN Number

ADR/RID: UN1760 IMDG: UN1760 IATA: UN1760

14.2UN Proper Shipping Name

ADR/RID: CORROSIVE LIQUID, N.O.S.
IMDG: CORROSIVE LIQUID, N.O.S.
IATA: CORROSIVE LIQUID, N.O.S.

14.3Transport hazard class(es)

ADR/RID: 8 IMDG: 8 IATA: 8

14.4Packing group, if applicable

ADR/RID: III IMDG: III IATA: III

14.5Environmental hazards

ADR/RID: no IMDG: no IATA: no

14.6Special precautions for user

no data available

14.7Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code

no data available

15.Regulatory information

15.1Safety, health and environmental regulations specific for the product in question

Chemical name Common names and synonyms CAS number EC number
Dimethyl acetylenedicarboxylate Dimethyl acetylenedicarboxylate 762-42-5 none
European Inventory of Existing Commercial Chemical Substances (EINECS) Listed.
EC Inventory Listed.
United States Toxic Substances Control Act (TSCA) Inventory Listed.
China Catalog of Hazardous chemicals 2015 Not Listed.
New Zealand Inventory of Chemicals (NZIoC) Listed.
Philippines Inventory of Chemicals and Chemical Substances (PICCS) Listed.
Vietnam National Chemical Inventory Not Listed.
Chinese Chemical Inventory of Existing Chemical Substances (China IECSC) Not Listed.

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