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.

1,006 – 1,020 of 1,049 results

1,006

Low Level Semivolatile Control Sample, SPEX CertiPrep™

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

Pricing & Availability

1,007

o-Xylene in Dimethyl Sulfoxide, SPEX CertiPrep™

CAS: 95-47-6 Molecular Formula: C8H10 Molecular Weight (g/mol): 106.17 MDL Number: MFCD00008519 InChI Key: CTQNGGLPUBDAKN-UHFFFAOYSA-N PubChem CID: 7237 ChEBI: CHEBI:28063 IUPAC Name: 1,2-xylene SMILES: CC1=CC=CC=C1C

Pricing & Availability
Specifications

PubChem CID	7237
CAS	95-47-6
Molecular Weight (g/mol)	106.17
ChEBI	CHEBI:28063
MDL Number	MFCD00008519
SMILES	CC1=CC=CC=C1C
IUPAC Name	1,2-xylene
InChI Key	CTQNGGLPUBDAKN-UHFFFAOYSA-N
Molecular Formula	C8H10

1,008

Diphenylamine, SPEX CertiPrep™

CAS: 122-39-4 Molecular Formula: C12H11N Molecular Weight (g/mol): 169.227 InChI Key: DMBHHRLKUKUOEG-UHFFFAOYSA-N PubChem CID: 11487 ChEBI: CHEBI:4640 IUPAC Name: N-phenylaniline SMILES: C1=CC=C(C=C1)NC2=CC=CC=C2

Pricing & Availability
Specifications

PubChem CID	11487
CAS	122-39-4
Molecular Weight (g/mol)	169.227
ChEBI	CHEBI:4640
SMILES	C1=CC=C(C=C1)NC2=CC=CC=C2
IUPAC Name	N-phenylaniline
InChI Key	DMBHHRLKUKUOEG-UHFFFAOYSA-N
Molecular Formula	C12H11N

1,009

Ethylcyclopentane, SPEX CertiPrep™

CAS: 1640-89-7 Molecular Formula: C7H14 Molecular Weight (g/mol): 98.189 InChI Key: IFTRQJLVEBNKJK-UHFFFAOYSA-N PubChem CID: 15431 IUPAC Name: ethylcyclopentane SMILES: CCC1CCCC1

Pricing & Availability
Specifications

PubChem CID	15431
CAS	1640-89-7
Molecular Weight (g/mol)	98.189
SMILES	CCC1CCCC1
IUPAC Name	ethylcyclopentane
InChI Key	IFTRQJLVEBNKJK-UHFFFAOYSA-N
Molecular Formula	C7H14

1,010

Aspon, SPEX CertiPrep™

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

Pricing & Availability

1,011

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

Pricing & Availability
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

1,012

1,2-Difluorotetrachloroethane, SPEX CertiPrep™

CAS: 76-12-0 Molecular Formula: C2Cl4F2 Molecular Weight (g/mol): 203.819 InChI Key: UGCSPKPEHQEOSR-UHFFFAOYSA-N PubChem CID: 6427 IUPAC Name: 1,1,2,2-tetrachloro-1,2-difluoroethane SMILES: C(C(F)(Cl)Cl)(F)(Cl)Cl

Pricing & Availability
Specifications

PubChem CID	6427
CAS	76-12-0
Molecular Weight (g/mol)	203.819
SMILES	C(C(F)(Cl)Cl)(F)(Cl)Cl
IUPAC Name	1,1,2,2-tetrachloro-1,2-difluoroethane
InChI Key	UGCSPKPEHQEOSR-UHFFFAOYSA-N
Molecular Formula	C2Cl4F2

1,013

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

Pricing & Availability
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

1,014

2,3-Dichloropropionic Acid, SPEX CertiPrep™

Pricing & Availability

1,015

Volatile Organics Additional Analytes Mix D, SPEX CertiPrep™

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

Pricing & Availability

1,016

4,4'-Dichlorobenzophenone, SPEX CertiPrep™

CAS: 90-98-2 Molecular Formula: C13H8Cl2O Molecular Weight (g/mol): 251.11 MDL Number: MFCD00000623 InChI Key: OKISUZLXOYGIFP-UHFFFAOYSA-N PubChem CID: 7034 ChEBI: CHEBI:27519 IUPAC Name: bis(4-chlorophenyl)methanone SMILES: ClC1=CC=C(C=C1)C(=O)C1=CC=C(Cl)C=C1

Pricing & Availability
Specifications

PubChem CID	7034
CAS	90-98-2
Molecular Weight (g/mol)	251.11
ChEBI	CHEBI:27519
MDL Number	MFCD00000623
SMILES	ClC1=CC=C(C=C1)C(=O)C1=CC=C(Cl)C=C1
IUPAC Name	bis(4-chlorophenyl)methanone
InChI Key	OKISUZLXOYGIFP-UHFFFAOYSA-N
Molecular Formula	C13H8Cl2O

1,017

Carbon Tetrachloride in Dimethyl Sulfoxide, SPEX CertiPrep™

CAS: 56-23-5 Molecular Formula: CCl4 Molecular Weight (g/mol): 153.81 MDL Number: MFCD00000785 InChI Key: VZGDMQKNWNREIO-UHFFFAOYSA-N PubChem CID: 5943 ChEBI: CHEBI:27385 IUPAC Name: tetrachloromethane SMILES: ClC(Cl)(Cl)Cl

Pricing & Availability
Specifications

PubChem CID	5943
CAS	56-23-5
Molecular Weight (g/mol)	153.81
ChEBI	CHEBI:27385
MDL Number	MFCD00000785
SMILES	ClC(Cl)(Cl)Cl
IUPAC Name	tetrachloromethane
InChI Key	VZGDMQKNWNREIO-UHFFFAOYSA-N
Molecular Formula	CCl4

1,018

2,6,11,15-Tetramethylhexadecane, SPEX CertiPrep™

CAS: 504-44-9 Molecular Formula: C20H42 Molecular Weight (g/mol): 282.556 InChI Key: KKFZXXATNGJPJS-UHFFFAOYSA-N PubChem CID: 136331 IUPAC Name: 2,6,11,15-tetramethylhexadecane SMILES: CC(C)CCCC(C)CCCCC(C)CCCC(C)C

Pricing & Availability
Specifications

PubChem CID	136331
CAS	504-44-9
Molecular Weight (g/mol)	282.556
SMILES	CC(C)CCCC(C)CCCCC(C)CCCC(C)C
IUPAC Name	2,6,11,15-tetramethylhexadecane
InChI Key	KKFZXXATNGJPJS-UHFFFAOYSA-N
Molecular Formula	C20H42

1,019

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

Pricing & Availability
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

1,020

2,2,'3,3',4,5',6,6'-Octachlorobiphenyl, SPEX CertiPrep™

CAS: 40186-71-8 Molecular Formula: C12H2Cl8 Molecular Weight (g/mol): 429.748 InChI Key: LJQOBQLZTUSEJA-UHFFFAOYSA-N PubChem CID: 38410 IUPAC Name: 1,2,3,5-tetrachloro-4-(2,3,5,6-tetrachlorophenyl)benzene SMILES: C1=C(C(=C(C(=C1Cl)Cl)Cl)C2=C(C(=CC(=C2Cl)Cl)Cl)Cl)Cl

Pricing & Availability
Specifications

PubChem CID	38410
CAS	40186-71-8
Molecular Weight (g/mol)	429.748
SMILES	C1=C(C(=C(C(=C1Cl)Cl)Cl)C2=C(C(=CC(=C2Cl)Cl)Cl)Cl)Cl
IUPAC Name	1,2,3,5-tetrachloro-4-(2,3,5,6-tetrachlorophenyl)benzene
InChI Key	LJQOBQLZTUSEJA-UHFFFAOYSA-N
Molecular Formula	C12H2Cl8

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Low Level Semivolatile Control Sample, SPEX CertiPrep™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

o-Xylene in Dimethyl Sulfoxide, SPEX CertiPrep™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Diphenylamine, SPEX CertiPrep™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ethylcyclopentane, SPEX CertiPrep™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Aspon, SPEX CertiPrep™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

2,2'-Difluorobiphenyls, SPEX CertiPrep™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

1,2-Difluorotetrachloroethane, SPEX CertiPrep™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Tetradifon, SPEX CertiPrep™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

2,3-Dichloropropionic Acid, SPEX CertiPrep™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Volatile Organics Additional Analytes Mix D, SPEX CertiPrep™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

4,4'-Dichlorobenzophenone, SPEX CertiPrep™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Carbon Tetrachloride in Dimethyl Sulfoxide, SPEX CertiPrep™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

2,6,11,15-Tetramethylhexadecane, SPEX CertiPrep™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Surrogate Standard, SPEX CertiPrep™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

2,2,'3,3',4,5',6,6'-Octachlorobiphenyl, SPEX CertiPrep™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Low Level Semivolatile Control Sample, SPEX CertiPrep™

o-Xylene in Dimethyl Sulfoxide, SPEX CertiPrep™

Diphenylamine, SPEX CertiPrep™

Ethylcyclopentane, SPEX CertiPrep™

Aspon, SPEX CertiPrep™

2,2'-Difluorobiphenyls, SPEX CertiPrep™

1,2-Difluorotetrachloroethane, SPEX CertiPrep™

Tetradifon, SPEX CertiPrep™

2,3-Dichloropropionic Acid, SPEX CertiPrep™

Volatile Organics Additional Analytes Mix D, SPEX CertiPrep™

4,4'-Dichlorobenzophenone, SPEX CertiPrep™

Carbon Tetrachloride in Dimethyl Sulfoxide, SPEX CertiPrep™

2,6,11,15-Tetramethylhexadecane, SPEX CertiPrep™

Surrogate Standard, SPEX CertiPrep™

2,2,'3,3',4,5',6,6'-Octachlorobiphenyl, SPEX CertiPrep™