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762-42-5

762-42-5 structure

762-42-5 structure

Name: Dimethyl but-2-ynedioate
Chemical Name: Dimethyl acetylenedicarboxylate
CAS Number: 762-42-5
Molecular Formula: C₆H₆O₄
Molecular Weight: 142.109
Catalog: Chemical reagent Organic reagent Ester Methyl ester compound
Create Date: 2018-08-04 13:44:48
Modify Date: 2026-07-05 21:23:16

Name	Dimethyl acetylenedicarboxylate
Synonyms	DIMETHYL ACETYLENEDICBOXYLATE Dimethylbut-2-indioat DIMETHYL ACETYLENEDICBOXYLATE FOR SYNT DIMETHYLACETYLENE DICBOXYLOATE Dimetyl acetylene dicboxylate Ethyne-1,2-dicboxylic acid dimethyl ester DIMETHYL ACETYLENEDICBOXYLATE (DMADC) Butynedioic acid dimethyl ester Dimethyl acetylenedi Acetylenedicarboxylic acid, dimethyl ester (8CI) Dimethyl 1,2-acetylenedicboxylate 1,2-Ethynedicboxylic acid dimethyl ester Dimethyl Acetylenedicboxylate > dimethylacetylenedicboxylicacid Pent-2-ynedioic acid diMethyl ester dimethylethynedicboxylate Dimethyl butynedioate enedicboxyL 4-Diethyl-pyrrol ACETYLENEDICBOXYLIC ACID DIMETHYL ESTER 2-Butynedioic acid dimethyl But-2-ynedioic acid dimethyl ester MFCD00008456 DiMethyl acetylenedicboxylate, R Bis(methoxycbonyl)acetylene 2-butynedioicacid,dimethylester 2-Butynedioic acid, 1,4-dimethyl ester 1,2-Bis(methoxycbonyl)ethyne DIMETHYL BUT-2-YNDIOATE 1,2-Bis(methoxycbonyl)acetylene Dimethyl ethynedicboxylate Bis(cbomethoxy)acetylene Dimethyl butyrate Dimethyl 2-butynedioate Dimethylacetylenedicboxylate=DMAD 1,2-Acetylenedicboxylic acid dimethyl ester Dimethyl acetylenedicboxylic acid but-2-ynedioicaciddimethylester Methyl acetylenedicboxylate ACETYLENEDICBOXYLATE dimethyl but-2-ynedioate acetylenedicarboxylate Dimethyl butyne-1,4-dioate Acetylenedicboxylic acid dimethyl ester~Butynedioic acid dimethyl ester~DMAD 2-Butynedioic acid, dimethyl ester EINECS 212-098-4 Dimethyl But-2-yne-1,4-dioate methylacetylenedicboxylate Di(cbomethoxy)acetylene

Density	1.2±0.1 g/cm3
Boiling Point	204.3±0.0 °C at 760 mmHg
Melting Point	-18 °C
Molecular Formula	C₆H₆O₄
Molecular Weight	142.109
Flash Point	86.1±0.0 °C
Exact Mass	142.026611
PSA	52.60000
LogP	1.50
Vapour Pressure	0.3±0.4 mmHg at 25°C
Index of Refraction	1.446

CHEMICAL IDENTIFICATION

RTECS NUMBER :: ES0175000

CHEMICAL NAME :: 2-Butynedioic acid, dimethyl ester

CAS REGISTRY NUMBER :: 762-42-5

BEILSTEIN REFERENCE NO. :: 0607063

LAST UPDATED :: 199701

DATA ITEMS CITED :: 3

MOLECULAR FORMULA :: C6-H6-O4

MOLECULAR WEIGHT :: 142.12

WISWESSER LINE NOTATION :: 1OV1UU1VO1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 50 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: NCNSA6 National Academy of Sciences, National Research Council, Chemical-Biological Coordination Center, Review. (Washington, DC) Volume(issue)/page/year: 5,13,1953

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 550 mg/kg

TOXIC EFFECTS :: Behavioral - somnolence (general depressed activity) Behavioral - ataxia Behavioral - coma

REFERENCE :: GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1-36, 1957-1992. For publisher information, see MTPEEI Volume(issue)/page/year: 28(6),55,1984

Symbol	GHS05, GHS07
Signal Word	Danger
Hazard Statements	H302-H314
Precautionary Statements	P280-P305 + P351 + P338-P310
Personal Protective Equipment	Faceshields;full-face respirator (US);Gloves;Goggles;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
Hazard Codes	C:Corrosive
Risk Phrases	R22;R34
Safety Phrases	S23-S26-S27-S36/37/39-S45
RIDADR	UN 3265 8/PG 2
WGK Germany	3
RTECS	ES0175000
Packaging Group	III
Hazard Class	8
HS Code	2917190090

Precursor 7
1114-20-1 64995-84-2 68827-52-1 67-56-1
86625-25-4 142-45-0 608-37-7
DownStream 10
1101-39-9 87361-41-9 101878-66-4 3243-95-6
110449-93-9 112083-52-0 543-21-5 54781-93-0
36944-99-7 138611-48-0

HS Code	2917190090
Summary	2917190090 acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0%

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