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.

886 – 900 of 1,049 results

886

Free Acids Mix; SPEX CertiPrep™

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

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887

VOA Additional Analytes Mix D, High Level, SPEX CertiPrep™

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

Pricing & Availability

888

Free Acids Analyte Mix with Surrogate, SPEX CertiPrep™

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

Pricing & Availability

889

Acetonitrile in Dimethyl Sulfoxide, SPEX CertiPrep™

CAS: 75-05-8 Molecular Formula: C2H3N Molecular Weight (g/mol): 41.053 InChI Key: WEVYAHXRMPXWCK-UHFFFAOYSA-N PubChem CID: 6342 ChEBI: CHEBI:38472 IUPAC Name: acetonitrile SMILES: CC#N

Pricing & Availability
Specifications

PubChem CID	6342
CAS	75-05-8
Molecular Weight (g/mol)	41.053
ChEBI	CHEBI:38472
SMILES	CC#N
IUPAC Name	acetonitrile
InChI Key	WEVYAHXRMPXWCK-UHFFFAOYSA-N
Molecular Formula	C2H3N

890

3-Chlorophenol, SPEX CertiPrep™

CAS: 108-43-0 Molecular Formula: C6H5ClO Molecular Weight (g/mol): 128.56 MDL Number: MFCD00002256 InChI Key: HORNXRXVQWOLPJ-UHFFFAOYSA-N PubChem CID: 7933 ChEBI: CHEBI:38855 IUPAC Name: 3-chlorophenol SMILES: OC1=CC=CC(Cl)=C1

Pricing & Availability
Specifications

PubChem CID	7933
CAS	108-43-0
Molecular Weight (g/mol)	128.56
ChEBI	CHEBI:38855
MDL Number	MFCD00002256
SMILES	OC1=CC=CC(Cl)=C1
IUPAC Name	3-chlorophenol
InChI Key	HORNXRXVQWOLPJ-UHFFFAOYSA-N
Molecular Formula	C6H5ClO

891

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

892

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

893

Dichloroacetonitrile, SPEX CertiPrep™

CAS: 3018-12-0 Molecular Formula: C2HCl2N Molecular Weight (g/mol): 109.937 InChI Key: STZZWJCGRKXEFF-UHFFFAOYSA-N PubChem CID: 18177 ChEBI: CHEBI:82444 IUPAC Name: 2,2-dichloroacetonitrile SMILES: C(#N)C(Cl)Cl

Pricing & Availability
Specifications

PubChem CID	18177
CAS	3018-12-0
Molecular Weight (g/mol)	109.937
ChEBI	CHEBI:82444
SMILES	C(#N)C(Cl)Cl
IUPAC Name	2,2-dichloroacetonitrile
InChI Key	STZZWJCGRKXEFF-UHFFFAOYSA-N
Molecular Formula	C2HCl2N

894

Cyanophos, SPEX CertiPrep™

CAS: 2636-26-2 Molecular Formula: C9H10NO3PS Molecular Weight (g/mol): 243.217 InChI Key: SCKHCCSZFPSHGR-UHFFFAOYSA-N PubChem CID: 17522 ChEBI: CHEBI:38621 IUPAC Name: 4-dimethoxyphosphinothioyloxybenzonitrile SMILES: COP(=S)(OC)OC1=CC=C(C=C1)C#N

Pricing & Availability
Specifications

PubChem CID	17522
CAS	2636-26-2
Molecular Weight (g/mol)	243.217
ChEBI	CHEBI:38621
SMILES	COP(=S)(OC)OC1=CC=C(C=C1)C#N
IUPAC Name	4-dimethoxyphosphinothioyloxybenzonitrile
InChI Key	SCKHCCSZFPSHGR-UHFFFAOYSA-N
Molecular Formula	C9H10NO3PS

895

2,7-Dimethylnaphthalene, SPEX CertiPrep™

CAS: 582-16-1 Molecular Formula: C12H12 Molecular Weight (g/mol): 156.23 MDL Number: MFCD00004121 InChI Key: LRQYSMQNJLZKPS-UHFFFAOYSA-N PubChem CID: 11396 ChEBI: CHEBI:48632 IUPAC Name: 2,7-dimethylnaphthalene SMILES: CC1=CC2=CC(C)=CC=C2C=C1

Pricing & Availability
Specifications

PubChem CID	11396
CAS	582-16-1
Molecular Weight (g/mol)	156.23
ChEBI	CHEBI:48632
MDL Number	MFCD00004121
SMILES	CC1=CC2=CC(C)=CC=C2C=C1
IUPAC Name	2,7-dimethylnaphthalene
InChI Key	LRQYSMQNJLZKPS-UHFFFAOYSA-N
Molecular Formula	C12H12

896

4-tert-Butylphenol, SPEX CertiPrep™

CAS: 98-54-4 Molecular Formula: C10H14O Molecular Weight (g/mol): 150.221 InChI Key: QHPQWRBYOIRBIT-UHFFFAOYSA-N PubChem CID: 7393 ChEBI: CHEBI:34444 IUPAC Name: 4-tert-butylphenol SMILES: CC(C)(C)C1=CC=C(C=C1)O

Pricing & Availability
Specifications

PubChem CID	7393
CAS	98-54-4
Molecular Weight (g/mol)	150.221
ChEBI	CHEBI:34444
SMILES	CC(C)(C)C1=CC=C(C=C1)O
IUPAC Name	4-tert-butylphenol
InChI Key	QHPQWRBYOIRBIT-UHFFFAOYSA-N
Molecular Formula	C10H14O

897

N,N-Dimethylacetamide in Dimethyl Sulfoxide, SPEX CertiPrep™

CAS: 127-19-5 Molecular Formula: C4H9NO Molecular Weight (g/mol): 87.12 MDL Number: MFCD00008686 InChI Key: FXHOOIRPVKKKFG-UHFFFAOYSA-N PubChem CID: 31374 ChEBI: CHEBI:84254 IUPAC Name: N,N-dimethylacetamide SMILES: CN(C)C(C)=O

Pricing & Availability
Specifications

PubChem CID	31374
CAS	127-19-5
Molecular Weight (g/mol)	87.12
ChEBI	CHEBI:84254
MDL Number	MFCD00008686
SMILES	CN(C)C(C)=O
IUPAC Name	N,N-dimethylacetamide
InChI Key	FXHOOIRPVKKKFG-UHFFFAOYSA-N
Molecular Formula	C4H9NO

898

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

899

Technical Chlordane, High Level, SPEX CertiPrep™

CAS: 57-74-9 Molecular Formula: C10H6Cl8 Molecular Weight (g/mol): 409.758 InChI Key: BIWJNBZANLAXMG-POTNBKISSA-N PubChem CID: 24860539 SMILES: C1C2C(C(C1Cl)Cl)C3(C(=C(C2(C3(Cl)Cl)Cl)Cl)Cl)Cl

Pricing & Availability
Specifications

PubChem CID	24860539
CAS	57-74-9
Molecular Weight (g/mol)	409.758
SMILES	C1C2C(C(C1Cl)Cl)C3(C(=C(C2(C3(Cl)Cl)Cl)Cl)Cl)Cl
InChI Key	BIWJNBZANLAXMG-POTNBKISSA-N
Molecular Formula	C10H6Cl8

900

1,1,1-Trichloroacetone, SPEX CertiPrep™

CAS: 918-00-3 Molecular Formula: C3H3Cl3O Molecular Weight (g/mol): 161.41 MDL Number: MFCD00018829 InChI Key: SMZHKGXSEAGRTI-UHFFFAOYSA-N PubChem CID: 13514 IUPAC Name: 1,1,1-trichloropropan-2-one SMILES: CC(=O)C(Cl)(Cl)Cl

Pricing & Availability
Specifications

PubChem CID	13514
CAS	918-00-3
Molecular Weight (g/mol)	161.41
MDL Number	MFCD00018829
SMILES	CC(=O)C(Cl)(Cl)Cl
IUPAC Name	1,1,1-trichloropropan-2-one
InChI Key	SMZHKGXSEAGRTI-UHFFFAOYSA-N
Molecular Formula	C3H3Cl3O

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Free Acids Mix; SPEX CertiPrep™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

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

Free Acids Analyte Mix with Surrogate, SPEX CertiPrep™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

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

3-Chlorophenol, 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

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

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

2,7-Dimethylnaphthalene, SPEX CertiPrep™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

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

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

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

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

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

Free Acids Mix; SPEX CertiPrep™

VOA Additional Analytes Mix D, High Level, SPEX CertiPrep™

Free Acids Analyte Mix with Surrogate, SPEX CertiPrep™

Acetonitrile in Dimethyl Sulfoxide, SPEX CertiPrep™

3-Chlorophenol, SPEX CertiPrep™

2,2'-Difluorobiphenyls, SPEX CertiPrep™

1,2-Difluorotetrachloroethane, SPEX CertiPrep™

Dichloroacetonitrile, SPEX CertiPrep™

Cyanophos, SPEX CertiPrep™

2,7-Dimethylnaphthalene, SPEX CertiPrep™

4-tert-Butylphenol, SPEX CertiPrep™

N,N-Dimethylacetamide in Dimethyl Sulfoxide, SPEX CertiPrep™

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

Technical Chlordane, High Level, SPEX CertiPrep™

1,1,1-Trichloroacetone, SPEX CertiPrep™