Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Palmitic acid
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Purity: 98.0%
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Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 2-Methyl-5-nitrobenzenesulfonic acid
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Purity: 98.0%
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Henan Tianfu Chemical Co., Ltd.
China
Product Name: 2-Methyl-5-nitrobenzenesulfonic acid 121-03-9
Price: $Inquiry/1kg $Inquiry/25kg $Inquiry/1000kg $Inquiry/10ton
Purity: 99.0%
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121-03-9

121-03-9 structure

121-03-9 structure

Name: 4-nitrotoluene-2-sulfonic acid
Chemical Name: 4-nitrotoluene-2-sulfonic acid
CAS Number: 121-03-9
Molecular Formula: C₇H₇NO₅S
Molecular Weight: 217.199
Catalog: Organic raw materials Hydrocarbon compounds and their derivatives Hydrocarbon nitrite
Create Date: 2018-09-22 20:33:19
Modify Date: 2026-07-04 18:03:22

Name	4-nitrotoluene-2-sulfonic acid
Synonyms	4-Nitrotoluenesulfonic Acid 2-Methyl-5-nitrobenzenesulfonic acid -9 PNOTSA 2-methyl-5-nitrobenzenesulfonato 4-nitrotoluene-2-sulfonicaci 2-methyl-5-nitro-benzenesulfonicaci 4-Nitro-toluol-2-sulfonsaeure 2-METHYL-5-NITROBENZENESULFONIC ACID Toluene-4-nitro-2-sulfonic acid 5-nitro-o-toluenesulfonicacid 4-NITRO-2-TOLUENESULFONIC ACID 5-nitro-o-toluenesulfonicaci 2-toluenesulfonicacid,5-nitro Benzenesulfonicacid,2-methyl-5-nitro kyselina4-nitrotoluen-2-sulfonova(czech) 5-nitro-o-toluenesulfonicac LABOTEST-BB LT00052933 MFCD00024914 P-NITROTOLUENE SULFONIC ACID 4-Nitro-o-toluenesulfonicacid paNitro Toluene-o-Sulfonic Acid 4-Nitrotoluene-2-sulfonic Acid Hydrate 4-nitrotoluene-2-sulphonic acid 5-nitro-2-methylbenzenesulfonicacid PA NITRO TOLUENE ORTHO SULFONIC ACID 2-Methyl-5-nitrobenzenesulfonic acid 5-nitro-o-toluenesulfonic acid para-nitrotoluene-ortho-sulfonic acid 1-Methyl-4-nitro-2-sulfobenzene 4-Nitrotoluene-2-sulfonicAcidHydrate> 4-nitrotoluene-2-sulphonicacid kyselina4-nitrotoluen-2-sulfonova 4-Nitro-2-sulfotoluene 2-Methyl-5-nitrobenzenesalfonicacid EINECS 204-445-3 4-Nitrotoluol-2-acid p-nitrotoluene-o-sulfonicacid LA15615410AL4-Nitrotoluene-2-sulfoniCacid 10 μ 2-METHYL-5-NITROBENZENESULPHONICACID PANITROTOLUENE SULFONIC ACID 4-Nitrotoluene-2-sulfonic acid dihydrate 4-NITROTOLUENE-2-SULFONIC ACID Toluenesulfonic acid,5-nitr 2-Methyl-5-nitrobenzenesulfonic acid ISO 9001：2015 REACH PNTOS 4-Nitrotoluene-2-sulfonic acid 10 μg/mL in Acetonitrile PNTOS 2-Methyl-5-nitrobenzenesulfonic acid Toluenesulfonic acid, 5-nitr PANITRO TOLUVIN ORTHO SULPHONIC ACID (P.N.T.O.S.A.) 2-Methyl-5-nitro-benzenesulfonic Acid

Density	1.5±0.1 g/cm3
Boiling Point	500ºC
Melting Point	135°C
Molecular Formula	C₇H₇NO₅S
Molecular Weight	217.199
Exact Mass	217.004486
PSA	108.57000
LogP	1.15
Index of Refraction	1.596

CHEMICAL IDENTIFICATION

RTECS NUMBER :: DB7175000

CHEMICAL NAME :: Benzenesulfonic acid, 2-methyl-5-nitro-

CAS REGISTRY NUMBER :: 121-03-9

BEILSTEIN REFERENCE NO. :: 2216176

LAST UPDATED :: 199701

DATA ITEMS CITED :: 4

MOLECULAR FORMULA :: C7-H7-N-O5-S

MOLECULAR WEIGHT :: 217.21

WISWESSER LINE NOTATION :: WSQR B1 ENW

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: Standard Draize test

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - rabbit

REFERENCE :: 85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,1055,1986

TYPE OF TEST :: Standard Draize test

ROUTE OF EXPOSURE :: Administration into the eye

SPECIES OBSERVED :: Rodent - rabbit

REFERENCE :: 85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,1055,1986 ** ACUTE TOXICITY DATA **

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 3710 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: 85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,1055,1986

Hazard Codes	C
Risk Phrases	R34
Safety Phrases	S26-S36/37/39
RIDADR	3261
RTECS	DB7175000
HS Code	2904909090

Precursor 8
75-84-3 121-02-8 99-99-0 99-87-6
108-88-3 7664-93-9 7553-56-2 1211962-72-9
DownStream 10
99-86-5 7745-93-9 81-11-8 118-88-7
56919-17-6 121-86-8 133-62-0 1211962-72-9
6268-17-3 6272-71-5

HS Code	2904909090
Summary	HS:2904909090 sulphonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0%

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