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762-42-5

762-42-5 structure
762-42-5 structure
Name Dimethyl acetylenedicarboxylate
Synonyms Acetylenedicarboxylic acid, dimethyl ester (8CI)
Dimethylbut-2-indioat
2-Butynedioic acid, dimethyl ester
EINECS 212-098-4
Dimethyl 2-butynedioate
dimethyl but-2-ynedioate
acetylenedicarboxylate
MFCD00008456
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
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
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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