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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931 – 945 of 994 results

931

Endothall-PFPH-Stock Standard, SPEX CertiPrep™

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

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932

Internal Standard, For USEPA Method 525.2, SPEX CertiPrep™

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

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933

Nitromathan in Dimethyl Sulfoxide, SPEX CertiPrep™

CAS: 75-52-5 Molecular Formula: CH3NO2 Molecular Weight (g/mol): 61.04 MDL Number: MFCD00007400 InChI Key: LYGJENNIWJXYER-UHFFFAOYSA-N PubChem CID: 6375 ChEBI: CHEBI:77701 IUPAC Name: nitromethane SMILES: C[N+]([O-])=O

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Specifications

PubChem CID	6375
CAS	75-52-5
Molecular Weight (g/mol)	61.04
ChEBI	CHEBI:77701
MDL Number	MFCD00007400
SMILES	C[N+]([O-])=O
IUPAC Name	nitromethane
InChI Key	LYGJENNIWJXYER-UHFFFAOYSA-N
Molecular Formula	CH3NO2

934

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

935

QC Check Solution, SPEX CertiPrep™

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

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936

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

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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

937

1,1-Dichloropropene, SPEX CertiPrep™

CAS: 563-58-6 Molecular Formula: C3H4Cl2 Molecular Weight (g/mol): 110.965 InChI Key: ZAIDIVBQUMFXEC-UHFFFAOYSA-N PubChem CID: 11245 IUPAC Name: 1,1-dichloroprop-1-ene SMILES: CC=C(Cl)Cl

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Specifications

PubChem CID	11245
CAS	563-58-6
Molecular Weight (g/mol)	110.965
SMILES	CC=C(Cl)Cl
IUPAC Name	1,1-dichloroprop-1-ene
InChI Key	ZAIDIVBQUMFXEC-UHFFFAOYSA-N
Molecular Formula	C3H4Cl2

938

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

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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

939

1,2-Dimethyl-4-Ethylbenzene, SPEX CertiPrep™

CAS: 934-80-5 Molecular Formula: C10H14 Molecular Weight (g/mol): 134.222 InChI Key: SBUYFICWQNHBCM-UHFFFAOYSA-N PubChem CID: 13629 IUPAC Name: 4-ethyl-1,2-dimethylbenzene SMILES: CCC1=CC(=C(C=C1)C)C

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Specifications

PubChem CID	13629
CAS	934-80-5
Molecular Weight (g/mol)	134.222
SMILES	CCC1=CC(=C(C=C1)C)C
IUPAC Name	4-ethyl-1,2-dimethylbenzene
InChI Key	SBUYFICWQNHBCM-UHFFFAOYSA-N
Molecular Formula	C10H14

940

Isophorone, SPEX CertiPrep™

CAS: 78-59-1 Molecular Formula: C9H14O Molecular Weight (g/mol): 138.21 MDL Number: MFCD00001584 InChI Key: HJOVHMDZYOCNQW-UHFFFAOYSA-N PubChem CID: 6544 ChEBI: CHEBI:34800 IUPAC Name: 3,5,5-trimethylcyclohex-2-en-1-one SMILES: CC1=CC(=O)CC(C)(C)C1

Pricing & Availability
Specifications

PubChem CID	6544
CAS	78-59-1
Molecular Weight (g/mol)	138.21
ChEBI	CHEBI:34800
MDL Number	MFCD00001584
SMILES	CC1=CC(=O)CC(C)(C)C1
IUPAC Name	3,5,5-trimethylcyclohex-2-en-1-one
InChI Key	HJOVHMDZYOCNQW-UHFFFAOYSA-N
Molecular Formula	C9H14O

941

1,2-Dichlorobenzene-d4, SPEX CertiPrep™

CAS: 2199-69-1 Molecular Formula: C6H4Cl2 Molecular Weight (g/mol): 151.02 MDL Number: MFCD00037106 InChI Key: RFFLAFLAYFXFSW-RHQRLBAQSA-N PubChem CID: 519913 IUPAC Name: 1,2-dichloro-3,4,5,6-tetradeuteriobenzene SMILES: [2H]C1=C([2H])C([2H])=C(Cl)C(Cl)=C1[2H]

Pricing & Availability
Specifications

PubChem CID	519913
CAS	2199-69-1
Molecular Weight (g/mol)	151.02
MDL Number	MFCD00037106
SMILES	[2H]C1=C([2H])C([2H])=C(Cl)C(Cl)=C1[2H]
IUPAC Name	1,2-dichloro-3,4,5,6-tetradeuteriobenzene
InChI Key	RFFLAFLAYFXFSW-RHQRLBAQSA-N
Molecular Formula	C6H4Cl2

942

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

943

Barban, SPEX CertiPrep™

CAS: 101-27-9 Molecular Formula: C11H9Cl2NO2 Molecular Weight (g/mol): 258.098 InChI Key: MCOQHIWZJUDQIC-UHFFFAOYSA-N PubChem CID: 7551 ChEBI: CHEBI:33421 IUPAC Name: 4-chlorobut-2-ynyl N-(3-chlorophenyl)carbamate SMILES: C1=CC(=CC(=C1)Cl)NC(=O)OCC#CCCl

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Specifications

PubChem CID	7551
CAS	101-27-9
Molecular Weight (g/mol)	258.098
ChEBI	CHEBI:33421
SMILES	C1=CC(=CC(=C1)Cl)NC(=O)OCC#CCCl
IUPAC Name	4-chlorobut-2-ynyl N-(3-chlorophenyl)carbamate
InChI Key	MCOQHIWZJUDQIC-UHFFFAOYSA-N
Molecular Formula	C11H9Cl2NO2

944

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

945

Dibensyl Phthalate, SPEX CertiPrep™

CAS: 523-31-9 Molecular Formula: C22H18O4 Molecular Weight (g/mol): 346.382 InChI Key: UCVPKAZCQPRWAY-UHFFFAOYSA-N PubChem CID: 220773 IUPAC Name: dibenzyl benzene-1,2-dicarboxylate SMILES: C1=CC=C(C=C1)COC(=O)C2=CC=CC=C2C(=O)OCC3=CC=CC=C3

Pricing & Availability
Specifications

PubChem CID	220773
CAS	523-31-9
Molecular Weight (g/mol)	346.382
SMILES	C1=CC=C(C=C1)COC(=O)C2=CC=CC=C2C(=O)OCC3=CC=CC=C3
IUPAC Name	dibenzyl benzene-1,2-dicarboxylate
InChI Key	UCVPKAZCQPRWAY-UHFFFAOYSA-N
Molecular Formula	C22H18O4

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