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Registry of Toxic Effects of Chemical Substances (RTECS)

Carbamic acid, methyl-, 2,3-dihydro-2,2-dimethyl-7-benzofuranyl ester

RTECS #

FB9450000

CAS #

1563-66-2

Updated

September 201

Molecular Weight

221.28

Molecular Formula

C12H15NO3

Synonyms

2,2-Dimethyl-2,3-dihydro-7-benzofuranyl N-methylcarbamate
2,2-Dimethyl-7-coumaranyl N-methylcarbamate
2,3-Dihydro-2,2-dimethyl-7-benzofuranyl methylcarbamate
2,3-Dihydro-2,2-dimethylbenzofuran-7-yl methylcarbamate
2,3-Dihydro-2,2-dimethylbenzofuranyl-7-N-methylcarbamate
7-Benzofuranol, 2,3-dihydro-2,2-dimethyl-, methylcarbamate (9CI)
BAY 70143
C2292-59A
Carbamic acid, methyl-, 2,2-dimethyl-2,3-dihydrobenzofuran-7-yl ester
Carbofuran
Carbofuran (ACGIH)
Carbofurane
Chinufur
Crisfuran
Curaterr
D 1221
ENT 27,164
FMC 10242
Furacarb
Furadan
Furadan 3G
Furadan 4F
Furadan 75 WP
Furadane
Furodan
Karbofuranu (Polish)
ME F248
Methyl carbamic acid 2,3-dihydro-2,2-dimethyl-7-benzofuranyl ester
NIA 10242
NIA 10242 75 WP
Niagara 10242
Niagara nia-10242
N-Metylokarbaminian 2,3-dwuwodoro-2,2-dwumetylobenzofuranylu-7 (Polish)
OMS-864
Yaltox

Skin and Eye Irritation and References

Route/OrganismDoseEffectReference
skin /rabbit 500 mg mildHPV028 -,-,2004

Mutation Data and Reference

System TestRoute/Organism/TissueDoseReference
Cytogenetic Analysislymphocyte/human100 mg/LTGANAK 18(1),17,1984
Cytogenetic Analysisoral/mouse3800 µg/kgMUREAV 465,123,2000
Cytogenetic Analysisovary/hamster0.15 mg/L/2HFCTOD7 45,928,2007
micronucleus testovary/hamster10 mg/L/24HMUREAV 656,68,2008
mutation in mammalian somatic cellslung/hamster500 µmol/LENVRAL 29,48,1982
mutation in microorganisms/Salmonella typhimurium10 mg/plate (+/-enzymatic activation step)MUREAV 116,185,1983
mutation in microorganisms/Other microorganisms60 mg/L (-enzymatic activation step)MILEDM 12,79,1979
mutation in microorganisms/Salmonella typhimurium1048 µg/plate (-enzymatic activation step)HPV028 -,-,2004
other mutation test systemsoral/mouse5700 µg/kgMUREAV 465,123,2000
sister chromatid exchangelymphocyte/human5 mg/LMUREAV 147,296,1985
sister chromatid exchangeovary/hamster10 mg/L/24HMUREAV 656,68,2008
sperm morphologyintraperitoneal/mouse2 mg/kgMUREAV 465,123,2000

Reproductive Effects Data and References

Route/OrganismDoseEffectReference
oral/rat 70 mg/kg (6-19D pregnant)Reproductive: Effects on fertility: Pre- implantation mortality (e.g., reduction in number of implants per female; total number of implants per corpora lutea)

Reproductive: Effects on fertility: Post- implantation mortality (e.g., dead and/or resorbed implants per total number of implants)
JPFCD2 20,373,1985
oral/rat 86 mg/kg (60D male)Reproductive: Paternal effects: Spermatogenesis (including genetic material, sperm morphology, motility, and count)

Reproductive: Paternal effects: Testes, epididymis, sperm duct
HETOEA 14,889,1995
oral/mouse 210 µg/kg (1-21D pregnant)Reproductive: Effects on newborn: Biochemical and metabolicJEPTDQ 2(2),357,1978
oral/mouse 10500 µg/kg (1-21D pregnant)Reproductive: Specific developmental abnormalities: Immune and reticuloendothelial system

Reproductive: Effects on newborn: Growth statistics (e.g., reduced weight gain)

Reproductive: Effects on newborn: Delayed effects
JEPTDQ 4(5-6),53,1980
oral/mouse 220 mg/kg (6-16D pregnant)Reproductive: Specific developmental abnormalities: Musculoskeletal systemJPFCD2 20,373,1985
oral/mouse 110 mg/kg (6-16D pregnant)Reproductive: Effects on embryo or fetus: Fetotoxicity (except death, e.g., stunted fetus)

Reproductive: Effects on embryo or fetus: Fetal death
JPFCD2 20,373,1985
oral/man 6200 µg/kg (multigeneration)Reproductive: Effects on newborn: Delayed effectsJRPFA4 113,95,1998
oral/rat 12 mg/kg (60D male)Reproductive: Paternal effects: Testes, epididymis, sperm ductTOXID9 -,193,2008
oral/rat 124.8 mg/kg (multigeneration)Reproductive: Other effects on male

Reproductive: Other effects on female

Reproductive: Effects on newborn: Growth statistics (e.g., reduced weight gain)
HPV028 -,-,2004

Acute Toxicity Data and References

Route/OrganismDoseEffectReference
In Vitro/Rat, neurons Inhibitor Concentration (50 percent kill): 35.5 µmol/L/2HBiochemical: Enzyme inhibition, induction, or change in blood or tissue levels: True cholinesteraseTIVIEQ 3,111,1989
inhalation/Dog lethal concentration (50 percent kill): 52 mg/m3Eye: Other eye effects

Gastrointestinal: Changes in structure or function of salivary glands

Gastrointestinal: Nausea or vomiting
JJOMDZ 12,16,1970
inhalation/rat lethal concentration (50 percent kill): 85 mg/m3Eye: Other eye effects

Gastrointestinal: Changes in structure or function of salivary glands

Gastrointestinal: Nausea or vomiting
JJOMDZ 12,16,1970
inhalation/rat lowest published toxic concentration: 50 mg/m3Behavioral: Ataxia

Lung, Thorax, or Respiration: Dyspnea

Lung, Thorax, or Respiration: Other changes
HPV028 -,-,2004
intraperitoneal/rat lowest published toxic dose: 1.5 mg/kgCardiac: Cardiomyopathy including infarction

Musculoskeletal: Other changes

Biochemical: Metabolism (intermediary): Other proteins
TXCYAC 266,48,2009
intraperitoneal/rat lowest published toxic dose: 1.5 mg/kgCardiac: Other changesTXCYAC 271,36,2010
intravenous/mouse lethal dose (50 percent kill): 450 µg/kgCSLNX* NX#11280
oral/chicken lethal dose (50 percent kill): 6300 µg/kgPeripheral Nerve and Sensation: Spastic paralysis with/without sensory change

Behavioral: Convulsions or effect on seizure threshold

Behavioral: Ataxia
TXAPA9 11,49,1967
oral/Dog lethal dose (50 percent kill): 19 mg/kgEye: Other eye effects

Gastrointestinal: Changes in structure or function of salivary glands

Gastrointestinal: Nausea or vomiting
JJOMDZ 12,16,1970
oral/Dog lethal dose (50 percent kill): 19 mg/kgHBPTO* 2,1094,2001
oral/domestic bird lowest published toxic dose: 0.5 mg/kgLiver: Hepatitis (hepatocellular necrosis), diffuse

Blood: Hemorrhage

Biochemical: Enzyme inhibition, induction, or change in blood or tissue levels: Transaminases
TOXID9 90,322,2006
oral/duck lethal dose (50 percent kill): 415 µg/kgTXAPA9 22,556,1972
oral/man lowest published toxic dose: 3571 mg/kgPeripheral Nerve and Sensation: Fasciculations

Cardiac: Change in rate

Lung, Thorax, or Respiration: Dyspnea
JTCTDW 43,867,2005
oral/man lowest published toxic dose: 1428.6 µL/kgPeripheral Nerve and Sensation: Paresthesia

Eye: Miosis (pupilliary constriction)

Nutritional and Gross Metabolic: Body temperature increase
JTCTDW 38,43,2000
oral/man lowest published toxic dose: 1.43 mL/kgPeripheral Nerve and Sensation: Paresthesia

Autonomic Nervous System: Other (direct) parasympathomimetic

Behavioral: Muscle weakness
JTCTDW 38,43,2000
oral/mouse lethal dose (50 percent kill): 2 mg/kgHBPTO* 2,1094,2001
oral/pigeon lowest published toxic dose: 0.5 mg/kgBehavioral: Change in psychophysiological testsTXAPA9 219,241,2007
oral/pigeon lethal dose (50 percent kill): 1330 µg/kgASTTA8 (680),157,1979
oral/quail lethal dose (50 percent kill): 3160 µg/kgASTTA8 (680),157,1979
oral/rat lethal dose (50 percent kill): 5 mg/kgPSSCBG 1,117,1970
oral/rat lowest published toxic dose: 0.5 mg/kgBrain and Coverings: Other degenerative changes

Biochemical: Enzyme inhibition, induction, or change in blood or tissue levels: True cholinesterase
TXAPA9 219,202,2007
oral/rat lethal dose (50 percent kill): 8 mg/kgBehavioral: Convulsions or effect on seizure threshold

Biochemical: Enzyme inhibition, induction, or change in blood or tissue levels: Cytochrome oxidases (indlucing oxidative phosphrylation)
EKFAE9 55,51,1992
oral/rat lowest published toxic dose: 0.5 mg/kgBlood: Changes in serum composition (e.g. TP, bilirubin, cholesterol)

Biochemical: Enzyme inhibition, induction, or change in blood or tissue levels: True cholinesterase
TOXID9 72,305,2003
oral/rat lowest published toxic dose: 1.5 mg/kgBrain and Coverings: Other degenerative changes

Biochemical: Metabolism (intermediary): Effect on cyclic nucleotides

Biochemical: Metabolism (intermediary): Effect on inflammation or mediation of inflammation
TOXID9 12,471,2008
oral/rat lethal dose (50 percent kill): 8.8 mg/kgBehavioral: Tremor

Lung, Thorax, or Respiration: Acute pulmonary edema
HPV028 -,-,2004
oral/wild bird lethal dose (50 percent kill): 420 µg/kgTXAPA9 26,154,1973
oral/woman lowest published toxic dose: 1200 µg/kgBehavioral: Hallucinations, distorted perceptions

Lung, Thorax, or Respiration: Dyspnea

Skin and Appendages: Other: Sweating
KHZDAN 24,445,1981
skin/mammal (species unspecified) lethal dose (50 percent kill): 837 mg/kgOlfaction: Other olfaction effects

Behavioral: Convulsions or effect on seizure threshold

Gastrointestinal: Changes in structure or function of salivary glands
GISAAA 53(2),89,1988
skin/rabbit lethal dose (50 percent kill): 885 mg/kgGUCHAZ 6,81,1973
skin/rabbit lowest published toxic dose: 2010 mg/kgEye: Miosis (pupilliary constriction)

Behavioral: Tremor

Kidney, Ureter, and Bladder: Hematuria
HPV028 -,-,2004
skin/rat lethal dose (50 percent kill): 120 mg/kgWRPCA2 9,119,1970
skin/wild bird lethal dose (50 percent kill): 100 mg/kgTXAPA9 26,154,1973
subcutaneous/rat lowest published toxic dose: 1.5 mg/kgBehavioral: Convulsions or effect on seizure threshold

Brain and Coverings: Other degenerative changes

Biochemical: Enzyme inhibition, induction, or change in blood or tissue levels: True cholinesterase
TOXID9 44,204,2005
subcutaneous/rat lowest published toxic dose: 1.5 mg/kgBiochemical: Metabolism (intermediary): OtherTOXID9 44,204,2005
subcutaneous/rat lowest published toxic dose: 1.5 mg/kgBehavioral: Convulsions or effect on seizure threshold

Gastrointestinal: Changes in structure or function of salivary glands

Biochemical: Metabolism (intermediary): Lipids including transport
TXCYAC 208,13,2005
subcutaneous/rat lowest published toxic dose: 1.5 mg/kgEndocrine: Estrogenic

Endocrine: Hypoglycemia

Nutritional and Gross Metabolic: Body temperature decrease
TOXID9 78,117,2004
subcutaneous/rat lowest published toxic dose: 1.25 mg/kgBrain and Coverings: Other degenerative changes

Biochemical: Metabolism (intermediary): Effect on mitochondrial function

Biochemical: Metabolism (intermediary): Other
TOXID9 1,49,2001
subcutaneous/rat lowest published toxic dose: 1.5 mg/kgPeripheral Nerve and Sensation: Fasciculations

Musculoskeletal: Other changes

Biochemical: Metabolism (intermediary): Effect on cyclic nucleotides
TOXID9 78,309,2004
subcutaneous/rat lowest published toxic dose: 1.5 mg/kgBlood: Changes in serum composition (e.g. TP, bilirubin, cholesterol)

Biochemical: Metabolism (intermediary): Lipids including transport

Biochemical: Metabolism (intermediary): Plasma proteins not involving coagulation
TOXID9 90,102,2006
subcutaneous/rat lowest published toxic dose: 1.5 mg/kgBrain and Coverings: Other degenerative changes

Peripheral Nerve and Sensation: Fasciculations

Biochemical: Enzyme inhibition, induction, or change in blood or tissue levels: True cholinesterase
TXAPA9 219,97,2007
unreported route/mouse lethal dose (50 percent kill): 5 mg/kgGISAAA 49(10),23,1984
unreported route/rabbit lethal dose (50 percent kill): 885 mg/kg30ZDA9 -,192,1971
unreported route/rat lethal dose (50 percent kill): 19 mg/kgGISAAA 49(10),23,1984
unreported route/rat lethal dose (50 percent kill): 8 mg/kgPeripheral Nerve and Sensation: Flaccid paralysis without anesthesia (usually neuromuscular blockage)FATOAO 50,97,1987

Other Multiple Dose Data and References

Route/OrganismDoseEffectReference
intraperitoneal/mammal (species unspecified) lowest published toxic dose: 10.5 mg/kg/6W- intermittentBlood: Other changesHBPTO* 1,776,2001
intraperitoneal/mouse lowest published toxic dose: 3 mg/kg/6W- intermittentBrain and Coverings: Other degenerative changes

Liver: Other changes

Biochemical: Metabolism (intermediary): Lipids including transport
TXCYAC 38,69,1986
multiple/non-mammalian species : 50 mg/m3/7D- continuousBrain and Coverings: Other degenerative changes

Biochemical: Enzyme inhibition, induction, or change in blood or tissue levels: Other hydrolases
TXCYAC 212,107,2005
oral/chicken lowest published toxic dose: 1960 mg/kg/2W- continuousRelated to Chronic Data: Death in the "MULTIPLE DOSE" data type fieldTXAPA9 11,49,1967
oral/Dog lowest published toxic dose: 4550 mg/kg/1Y- continuousBlood: Other changes

Blood: Changes in erythrocyte (RBC) count

Biochemical: Enzyme inhibition, induction, or change in blood or tissue levels: True cholinesterase
RCTOE4 104,35,1988
oral/mouse lowest published toxic dose: 39 mg/kg/30D- intermittentReproductive: Maternal effects: Oogenesis

Nutritional and Gross Metabolic: Weight loss or decreased weight gain

Related to Chronic Data: Changes in ovarian weight
BECTA6 71,422,2003
oral/mouse lowest published toxic dose: 10.5 mg/kg/15D- intermittentEndocrine: Differential effect of sex or castration on observed toxicity

Related to Chronic Data: Changes in ovarian weight
TXCYAC 204,87,2004
oral/mouse lowest published toxic dose: 13686 mg/kg/2Y- continuousBrain and Coverings: Other degenerative changes

Biochemical: Enzyme inhibition, induction, or change in blood or tissue levels: True cholinesterase
RCTOE4 104,35,1988
oral/rabbit lowest published toxic dose: 0.99 mg/kg/33D- continuousImmunological Including Allergic: Decrease in humoral immune responseTXAPA9 32,587,1975
oral/rabbit lowest published toxic dose: 1.71 mg/kg/57D- continuousBlood: Changes in spleenTXAPA9 32,587,1975
oral/rabbit lowest published toxic dose: 1.32 mg/kg/44D- continuousImmunological Including Allergic: Decreased immune responseTXAPA9 32,587,1975
oral/rat lowest published toxic dose: 21 mg/kg/30D- intermittentBrain and Coverings: Other degenerative changes

Biochemical: Enzyme inhibition, induction, or change in blood or tissue levels: True cholinesterase

Biochemical: Neurotransmitters or modulators (putative): Catecholamine levels in CNS
BCTKAG 14,289,1981
oral/rat lowest published toxic dose: 3640 mg/kg/2Y- continuousBrain and Coverings: Other degenerative changes

Blood: Other changes

Biochemical: Enzyme inhibition, induction, or change in blood or tissue levels: True cholinesterase
RCTOE4 104,35,1988
oral/rat lowest published toxic dose: 12 mg/kg/60D- intermittentEndocrine: Other changes

Nutritional and Gross Metabolic: Weight loss or decreased weight gain
TOXID9 -,193,2008
oral/rat lowest published toxic dose: 900 mg/kg/24W- intermittentBlood: Changes in serum composition (e.g. TP, bilirubin, cholesterol)

Nutritional and Gross Metabolic: Weight loss or decreased weight gain

Biochemical: Enzyme inhibition, induction, or change in blood or tissue levels: True cholinesterase
HPV028 -,-,2004
oral/wild bird lowest published toxic dose: 71600 µg/kg/7D- continuousBehavioral: Somnolence (general depressed activity)

Behavioral: Food intake (animal)

Nutritional and Gross Metabolic: Weight loss or decreased weight gain
AECTCV 11,611,1982
skin/rabbit lowest published toxic dose: 17 gm/kg/20D- intermittentRelated to Chronic Data: Death in the "MULTIPLE DOSE" data type fieldJJOMDZ 12,16,1970
skin/rat lowest published toxic dose: 5250 mg/kg/21D- intermittentBehavioral: Tremor

Liver: Changes in liver weight

Nutritional and Gross Metabolic: Weight loss or decreased weight gain
TOXID9 -,55,2008

Reviews

OrganizationStandardReference
American Conference of Governmental Industrial Hygienists (ACGIH)Threshold Limit Value-time-weighted average 0.1 mg/m3 (inhal, vapor)DTLVS* TLV/BEI,2013
American Conference of Governmental Industrial Hygienists (ACGIH)Threshold Limit Value-Not classifiable as a human carcinogenDTLVS* TLV/BEI,2013
TOXICOLOGY REVIEWJAVMA4 164,277,1974
TOXICOLOGY REVIEWTOLED5 128,45,2002
TOXICOLOGY REVIEWMUREAV 562,77,2004
TOXICOLOGY REVIEWMUTAEX 21,93,2006
TOXICOLOGY REVIEWNETOX* 26,531,2005
TOXICOLOGY REVIEWHTOPA* 1,501,2002
TOXICOLOGY REVIEWFEREAC 73,44864,2008
TOXICOLOGY REVIEWFEREAC 74,23046,2009

Standards and Regulations

OrganizationStandardReference
Environmental Protection Agency (EPA) Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) 1988 PESTICIDE SUBJECT TO REGISTRATION OR RE-REGISTRATIONFEREAC 54,7740,1989
Environmental Protection Agency (EPA) Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) 1998 STATUS OF PESTICIDESSupportedRBREV* -,94,1998
Occupational Exposure Limit IN ARGENTINA, BULGARIA, COLOMBIA, JORDAN check ACGIH TLV;
Occupational Exposure Limit IN SINGAPORE, VIETNAM check ACGIH TLV
Occupational Exposure Limit-AUSTRALIAtime-weighted average 0.1 mg/m3, JUL2008
Occupational Exposure Limit-AUSTRIAMAK-TMW 0.1 mg/m3;KZW 0.2 mg/m3, inhal, 2007
Occupational Exposure Limit-BELGIUMtime-weighted average 0.1 mg/m3, MAR2002
Occupational Exposure Limit-DENMARKtime-weighted average 0.1 mg/m3, MAY2011
Occupational Exposure Limit-FRANCEVME 0.1 mg/m3, FEB2006
Occupational Exposure Limit-ICELANDtime-weighted average 0.1 mg/m3, NOV2011
Occupational Exposure Limit-INDIAtime-weighted average 0.1 mg/m3, JAN1993
Occupational Exposure Limit-KOREAtime-weighted average 0.1 mg/m3, 2006
Occupational Exposure Limit-MEXICOtime-weighted average 0.1 mg/m3, 2004
Occupational Exposure Limit-NEW ZEALANDtime-weighted average 0.1 mg/m3, JAN2002
Occupational Exposure Limit-NORWAYtime-weighted average 0.1 mg/m3, JAN1999
Occupational Exposure Limit-PERUtime-weighted average 0.1 mg/m3, JUL2005
Occupational Exposure Limit-POLANDMAC(time-weighted average) 0.1 mg/m3, JAN1999
Occupational Exposure Limit-SWITZERLANDMAK-week 0.1 mg/m3, JAN2011
Occupational Exposure Limit-THE NETHERLANDSMAC-TGG 0.1 mg/m3, 2003

NIOSH Documentation and Surveillance

OrganizationStandardReference
National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Level TO CARBOFURAN-air10H time-weighted average 0.1 mg/m3NIOSH* DHHS #95-121,1995

Status in Federal Agencies

OrganizationReference
EPA GENETOX PROGRAM 1988, Inconclusive: B subtilis rec assay; E coli polA without S9
EPA GENETOX PROGRAM 1988, Negative: D melanogaster Sex-linked lethal
EPA GENETOX PROGRAM 1988, Negative: Histidine reversion-Ames test
EPA GENETOX PROGRAM 1988, Negative: In vitro UDS-human fibroblast; TRP reversion
EPA GENETOX PROGRAM 1988, Negative: S cerevisiae-homozygosis
EPA TSCA Section 8(b) CHEMICAL INVENTORY
EPA TSCA Section 8(d) unpublished health/safety studies
EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JANUARY 2001
On EPA IRIS database
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