EPA Methods Standards

Environmental Protection Agency standards suitable for use as reference materials for assaying environmental sample conditions; includes standards for use in determining air, water, and soil quality.

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856 – 870 of 995 results

856

Toxaphene, SPEX CertiPrep™

ISO/IEC Guide 34 Certified, NIST-Traceable Certified Reference Material

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857

2,2'-Difluorobiphenyls, SPEX CertiPrep™

CAS: 388-82-9 Molecular Formula: C12H8F2 Molecular Weight (g/mol): 190.19 MDL Number: MFCD00017910 InChI Key: PXFIPIAXFGAEMJ-UHFFFAOYSA-N PubChem CID: 123055 IUPAC Name: 2,2'-difluoro-1,1'-biphenyl SMILES: FC1=CC=CC=C1C1=CC=CC=C1F

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Specifications

PubChem CID	123055
CAS	388-82-9
Molecular Weight (g/mol)	190.19
MDL Number	MFCD00017910
SMILES	FC1=CC=CC=C1C1=CC=CC=C1F
IUPAC Name	2,2'-difluoro-1,1'-biphenyl
InChI Key	PXFIPIAXFGAEMJ-UHFFFAOYSA-N
Molecular Formula	C12H8F2

858

Tetradifon, SPEX CertiPrep™

CAS: 116-29-0 Molecular Formula: C12H6Cl4O2S Molecular Weight (g/mol): 356.038 InChI Key: MLGCXEBRWGEOQX-UHFFFAOYSA-N PubChem CID: 8305 ChEBI: CHEBI:39330 IUPAC Name: 1,2,4-trichloro-5-(4-chlorophenyl)sulfonylbenzene SMILES: C1=CC(=CC=C1S(=O)(=O)C2=CC(=C(C=C2Cl)Cl)Cl)Cl

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Specifications

PubChem CID	8305
CAS	116-29-0
Molecular Weight (g/mol)	356.038
ChEBI	CHEBI:39330
SMILES	C1=CC(=CC=C1S(=O)(=O)C2=CC(=C(C=C2Cl)Cl)Cl)Cl
IUPAC Name	1,2,4-trichloro-5-(4-chlorophenyl)sulfonylbenzene
InChI Key	MLGCXEBRWGEOQX-UHFFFAOYSA-N
Molecular Formula	C12H6Cl4O2S

859

2-Chloro-1,3-butadiene, SPEX CertiPrep™

CAS: 126-99-8 Molecular Formula: C4H5Cl Molecular Weight (g/mol): 88.534 InChI Key: YACLQRRMGMJLJV-UHFFFAOYSA-N PubChem CID: 31369 ChEBI: CHEBI:39481 IUPAC Name: 2-chlorobuta-1,3-diene SMILES: C=CC(=C)Cl

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Specifications

PubChem CID	31369
CAS	126-99-8
Molecular Weight (g/mol)	88.534
ChEBI	CHEBI:39481
SMILES	C=CC(=C)Cl
IUPAC Name	2-chlorobuta-1,3-diene
InChI Key	YACLQRRMGMJLJV-UHFFFAOYSA-N
Molecular Formula	C4H5Cl

860

Dimethoxymethane, SPEX CertiPrep™

CAS: 109-87-5 Molecular Formula: C3H8O2 Molecular Weight (g/mol): 76.095 InChI Key: NKDDWNXOKDWJAK-UHFFFAOYSA-N PubChem CID: 8020 ChEBI: CHEBI:48341 IUPAC Name: dimethoxymethane SMILES: COCOC

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Specifications

PubChem CID	8020
CAS	109-87-5
Molecular Weight (g/mol)	76.095
ChEBI	CHEBI:48341
SMILES	COCOC
IUPAC Name	dimethoxymethane
InChI Key	NKDDWNXOKDWJAK-UHFFFAOYSA-N
Molecular Formula	C3H8O2

861

Surrogate Standard, SPEX CertiPrep™

CAS: 110-56-5 Molecular Formula: C4H8Cl2 Molecular Weight (g/mol): 127.01 MDL Number: MFCD00001011 InChI Key: KJDRSWPQXHESDQ-UHFFFAOYSA-N PubChem CID: 8059 IUPAC Name: 1,4-dichlorobutane SMILES: ClCCCCCl

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Specifications

PubChem CID	8059
CAS	110-56-5
Molecular Weight (g/mol)	127.01
MDL Number	MFCD00001011
SMILES	ClCCCCCl
IUPAC Name	1,4-dichlorobutane
InChI Key	KJDRSWPQXHESDQ-UHFFFAOYSA-N
Molecular Formula	C4H8Cl2

862

Free Acids Analyte Mix with Surrogate, SPEX CertiPrep™

ISO/IEC Guide 34 Certified, NIST-Traceable Certified Reference Material

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863

2,2',3,3',4,3',6-Heptachlorobiphenyl, SPEX CertiPrep™

CAS: 52663-71-5 Molecular Formula: C12H3Cl7 Molecular Weight (g/mol): 395.306 InChI Key: TZMHVHLTPWKZCI-UHFFFAOYSA-N PubChem CID: 40478 IUPAC Name: 1,2,3,5-tetrachloro-4-(2,3,4-trichlorophenyl)benzene SMILES: C1=CC(=C(C(=C1C2=C(C(=C(C=C2Cl)Cl)Cl)Cl)Cl)Cl)Cl

Pricing & Availability
Specifications

PubChem CID	40478
CAS	52663-71-5
Molecular Weight (g/mol)	395.306
SMILES	C1=CC(=C(C(=C1C2=C(C(=C(C=C2Cl)Cl)Cl)Cl)Cl)Cl)Cl
IUPAC Name	1,2,3,5-tetrachloro-4-(2,3,4-trichlorophenyl)benzene
InChI Key	TZMHVHLTPWKZCI-UHFFFAOYSA-N
Molecular Formula	C12H3Cl7

864

Siduron, SPEX CertiPrep™

CAS: 1982-49-6 Molecular Formula: C14H20N2O Molecular Weight (g/mol): 232.33 MDL Number: MFCD00072453 InChI Key: JXVIIQLNUPXOII-UHFFFAOYNA-N PubChem CID: 16116 ChEBI: CHEBI:81744 IUPAC Name: 1-(2-methylcyclohexyl)-3-phenylurea SMILES: CC1CCCCC1NC(=O)NC1=CC=CC=C1

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Specifications

PubChem CID	16116
CAS	1982-49-6
Molecular Weight (g/mol)	232.33
ChEBI	CHEBI:81744
MDL Number	MFCD00072453
SMILES	CC1CCCCC1NC(=O)NC1=CC=CC=C1
IUPAC Name	1-(2-methylcyclohexyl)-3-phenylurea
InChI Key	JXVIIQLNUPXOII-UHFFFAOYNA-N
Molecular Formula	C14H20N2O

865

2,3-Dichloropropionic Acid, SPEX CertiPrep™

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866

Mix F, SPEX CertiPrep™

ISO/IEC Guide 34 Certified, NIST-Traceable Certified Reference Material

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867

Derivitized Endothall Standard, SPEX CertiPrep™

CAS: 62059-43-2 Molecular Formula: C8H12O6 Molecular Weight (g/mol): 204.178 InChI Key: RHLALKDQINFLPM-UHFFFAOYSA-N PubChem CID: 23615703 IUPAC Name: 7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid;hydrate SMILES: C1CC2C(C(C1O2)C(=O)O)C(=O)O.O

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Specifications

PubChem CID	23615703
CAS	62059-43-2
Molecular Weight (g/mol)	204.178
SMILES	C1CC2C(C(C1O2)C(=O)O)C(=O)O.O
IUPAC Name	7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid;hydrate
InChI Key	RHLALKDQINFLPM-UHFFFAOYSA-N
Molecular Formula	C8H12O6

868

Endothall-PFPH-Stock Standard, SPEX CertiPrep™

ISO/IEC Guide 34 Certified, NIST-Traceable Certified Reference Material

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869

2,4,4-Trimethyl-2-Pentene, SPEX CertiPrep™

CAS: 107-40-4 Molecular Formula: C8H16 Molecular Weight (g/mol): 112.216 InChI Key: LAAVYEUJEMRIGF-UHFFFAOYSA-N PubChem CID: 7869 IUPAC Name: 2,4,4-trimethylpent-2-ene SMILES: CC(=CC(C)(C)C)C

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Specifications

PubChem CID	7869
CAS	107-40-4
Molecular Weight (g/mol)	112.216
SMILES	CC(=CC(C)(C)C)C
IUPAC Name	2,4,4-trimethylpent-2-ene
InChI Key	LAAVYEUJEMRIGF-UHFFFAOYSA-N
Molecular Formula	C8H16

870

Aspon, SPEX CertiPrep™

ISO/IEC Guide 34 Certified, NIST-Traceable Certified Reference Material

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