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4-(HYDROXYMERCURY)BENZOIC ACID SODIUM SALT

CAS No.
138-85-2
Chemical Name:
4-(HYDROXYMERCURY)BENZOIC ACID SODIUM SALT
Synonyms
PCMB;P-Hydroxymer;p-chloromercuribenzoate;P-CHLOROMERCURIOBENZOATE;4-hydroxymercuribenzoate;sodiump-hydroxymercuribenzoate;SODIUM 4-(HYDROXYMERCURIO)BENZOATE;P-HYDROXYMERCURIBENZOIC ACID SODIUM;P-HYDROXY MERCURIBENZOATE SODIUM SALT;4-CHLOROMERCURIBENZOIC ACID SODIUM SALT
CBNumber:
CB9350409
Molecular Formula:
C7H4HgNaO3
Molecular Weight:
359.69
MDL Number:
MFCD00002527
MOL File:
138-85-2.mol
MSDS File:
SDS
Last updated:2026-01-13 11:27:13
Product description Number Pack Size Price
4-(Hydroxymercuri)benzoic acid sodium salt ≥95.0% (Hg) 55540 5g $124
4-(Hydroxymercuri)benzoic acid sodium salt ≥95.0% (Hg) 55540 25g $474
4-(Hydroxymercuri)benzoic acid sodium salt ≥97% 8.20308 5G $116

4-(HYDROXYMERCURY)BENZOIC ACID SODIUM SALT Properties

Melting point ≥300 °C
storage temp. Poison room
form Crystalline Powder
color White
BRN 6118796
InChI 1S/C7H5O2.Hg.Na.H2O/c8-7(9)6-4-2-1-3-5-6;;;/h2-5H,(H,8,9);;;1H2/q;2*+1;/p-2
InChIKey CBELQCYFTSHKPJ-UHFFFAOYSA-L
SMILES [Na+].O[Hg]c1ccc(cc1)C([O-])=O
CAS DataBase Reference 138-85-2(CAS DataBase Reference)
FDA UNII 8I6993TIKC
EPA Substance Registry System Mercurate(1-), (4-carboxylatophenyl)hydroxy-, sodium (138-85-2)
UNSPSC Code 12352103
NACRES NA.25

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms
GHS06,GHS08,GHS09
Signal word  Danger
Hazard statements  H300+H310+H330-H373-H410
Precautionary statements  P262-P273-P280-P302+P352+P310-P304+P340+P310-P314
PPE Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
Hazard Codes  T+,N
Risk Statements  26/27/28-33-50/53
Safety Statements  13-28-36-45-60-61
RIDADR  UN 2025 6.1/PG 2
WGK Germany  3
RTECS  OV8150000
3-10
TSCA  TSCA listed
HS Code  2852 10 00
HazardClass  6.1(a)
PackingGroup  II
Storage Class 6.1A - Combustible acute toxic Cat. 1 and 2
very toxic hazardous materials
Hazard Classifications Acute Tox. 1 Dermal
Acute Tox. 2 Inhalation
Acute Tox. 2 Oral
Aquatic Acute 1
Aquatic Chronic 1
STOT RE 2

4-(HYDROXYMERCURY)BENZOIC ACID SODIUM SALT price More Price(3)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 55540 4-(Hydroxymercuri)benzoic acid sodium salt ≥95.0% (Hg) 138-85-2 5g $124 2026-03-19 Buy
Sigma-Aldrich 55540 4-(Hydroxymercuri)benzoic acid sodium salt ≥95.0% (Hg) 138-85-2 25g $474 2026-03-19 Buy
Sigma-Aldrich 8.20308 4-(Hydroxymercuri)benzoic acid sodium salt ≥97% 138-85-2 5G $116 2023-06-20 Buy
Product number Packaging Price Buy
55540 5g $124 Buy
55540 25g $474 Buy
8.20308 5G $116 Buy

4-(HYDROXYMERCURY)BENZOIC ACID SODIUM SALT Chemical Properties,Uses,Production

Chemical Properties

White crystalline powder

Uses

4-(Hydroxymercuri)benzoic acid is an organic mercurial compound th at reacts via mercury-sulfur affinity with sulfhydryl groups in peptides, proteins and other molecules. PCMB may be used for the determination of sulfhydryl groups in proteins according to Boyer, by atomic absorption, and stopped-flow measurements, G. Castronuovo-Lepore et al.. It may be used for specific applications such as probing the active site of an enzyme such as cytochrome C oxidase. 4-(Hydroxymercuri)benzoic acid appeared mistakenly as p-chloromercuriobenzoate [PCMB] in earlier literature.

Safety Profile

Poison by intraperitoneal route. Mutation data reported. When heated to decomposition it emits toxic fumes of Hg and NazO. See also MERCURY COMPOUNDS.

4-(HYDROXYMERCURY)BENZOIC ACID SODIUM SALT Preparation Products And Raw materials

Raw materials

Preparation Products

4-(HYDROXYMERCURY)BENZOIC ACID SODIUM SALT Suppliers

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4-CHLOROMERCURIBENZOIC ACID SODIUM SALT 4-(HYDROXYMERCURI)BENZOIC ACID SODIUM SALT 4-(HYDROXYMERCURIO)BENZOIC ACID SODIUM SALT 4-(HYDROXYMERCURY)BENZOIC ACID SODIUM SALT SODIUM 4-(HYDROXYMERCURIO)BENZOATE P-HYDROXY MERCURIBENZOATE SODIUM SALT P-HYDROXYMERCURIBENZOIC ACID SODIUM SALT P-CHLOROMERCURIBENZOIC ACID, SODIUM SALT P-CHLOROMERCURIOBENZOATE PCMB (4-carboxylatophenyl)hydroxy-mercurate(1-sodium (p-carboxyphenyl)hydroxy-mercursodiumsalt 4-hydroxymercuribenzoate p-chloromercuribenzoate P-HYDROXYMERCURIBENZOIC ACID SODIUM 4-ChloromercuribenzoicAcid,SodiumSalt,>95 sodium(4-carboxylatophenyl)hydroxymercurate(1-) sodiump-hydroxymercuribenzoate p-Chloromercuribenzoate, p-Hydroxymercuribenzoic acid sodium salt, Sodium 4-(hydroxymercurio)benzoate 4-[Hydroxymercurio(II)]benzoic acid sodium salt 4-Hydroxymercurio(II)benzoic acid sodium salt 4-Sodiooxycarbonylmercury(II) hydroxide 4-Sodiooxycarbonylphenylmercury(II) hydoxide 4-(Hydroxymercury)benzoic acid sodium salt,98% P-Hydroxymer Mercurate(1-), (4-carboxylatophenyl)hydroxy-, sodium Mercury, (p-carboxyphenyl)hydroxy-, sodium salt. 4-(HYDROXYMERCURI)BENZOIC ACID SODIUM SALT 98+% p-CHLOROMERCURIBENZOIC ACID SODIUM SALT extrapure 4-(Hydroxymercurio)benzoic acid sodium salt, p-Hydroxymercuribenzoic acid sodium salt, Sodium 4-(hydroxymercurio)benzoate 4-(HYDROXYMERCURY)BENZOIC ACID SODIUM SALT ISO 9001:2015 REACH Sodium (4-carboxylatophenyl)mercury hydrate 138-85-2 C7H5HgO3Na 4HOHgC6H4CO2Na C7H5HgNaO3 Organometallics