mercaptan ** methanethiol ** thiomethyl alcohol ** thiomethanol ** Translations

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GENERAL INFORMATION

Description: Chemical transformation product

Introduction: -

EC Directive 1107/2009 (repealing 91/414):

Status	Not applicable
Dossier rapporteur/co-rapporteur	Not applicable
Date inclusion expires	Not applicable

Approved for use () or known to be used () in the following European countries:

AT

BE

BG

CY

CZ

DE

DK

EE

EL

ES

FI

FR

HU

IE

IT

LT

LU

LV

MT

NL

PL

PT

RO

SE

SI

SK

UK

General status:

Pesticide type	Metabolite
Metabolite Type	Soil
Substance group	Unclassified
Substance origin	Synthetic
Mode of action	Not applicable
CAS RN	74-93-1
EC number	200-822-1
CIPAC number	-
US EPA chemical code	Not applicable
Chemical formula	CH4S
SMILES	SC
International Chemical Identifier (InChI)	InChI=1/CH4S/c1-2/h2H,1H3
Structure diagram/image available?	Yes
Molecular mass (g mol-1)	48.10
IUPAC Name	methylmercaptan
CAS Name	methyl mercaptan
Other status information	Marine Pollutant
Herbicide Resistance Classification (HRAC)	Not applicable
Insecticide Resistance Classification (IRAC)	Not applicable
Fungicide Resistance Classification (FRAC)	Not applicable
Physical state	Colourless gas smelling of rotting cabbage
Related substances & organisms	-

Can be a metabolite of:

Parent		Formation Medium	Estimated Maximum Occurrence Fraction	91/414 Relevancy
vernolate		Soil		-

Formulations:

Property	Value
Example manufacturers of products using this active	Not applicable
Example products using this active	-
UK LERAP status	Not applicable
Formulation and application details	-

ENVIRONMENTAL FATE

Property		Value	Source/Quality Score/Other Information	Interpretation
Solubility - In water at 20oC (mg l-1)		23300	F4	High
Solubility - In organic solvents at 20oC (mg l-1)		-	-	-
Melting Point (oC)		-	-	-
Boiling Point (oC)		-	-	-
Degradation point (oC)		-	-	-
Flashpoint (oC)		-	-	-
Octanol-water partition coefficient at pH 7, 20oC	P	2.00 X 1001	Calculated	-
	Log P	1.3	F2 - Estimated	Low
Bulk density (g ml-1)/Specific gravity		0.81	Q2	-
Dissociation constant (pKa) at 25oC		-	-	-
		Note:
Vapour pressure at 25oC (mPa)		-	-	-
Henry's law constant at 25oC (Pa m3 mol-1)		-	-	-
Henry's law constant at 20oC (dimensionless)		-	-	-
GUS leaching potential index		-	-	-
SCI-GROW groundwater index (µg l-1) for a 1 kg ha-1 or 1 l ha-1 application rate	Value	-	-	-
	Note	-
Potential for particle bound transport index		-	-	-
Maximum UV-vis absorption L mol-1 cm-1		-	-	-
Surface tension (mN m-1)		-	-	-

Degradation:

Property		Value	Source/Quality Score/Other Information	Interpretation
Soil degradation (days) (aerobic)	DT50 (typical)	-	-	-
	DT50 (lab at 20oC)	-	-	-
	DT50 (field)	-	-	-
	DT90 (lab at 20oC)	-	-	-
	DT90 (field)	-	-	-
	Note:	-
Aqueous photolysis DT50 (days) at pH 7	Value	-	-	-
	Note	-
Aqueous hydrolysis DT50 (days) at 20oC and pH 7	Value	-	-	-
	Note	-
Water-Sediment DT50 (days)		-	-	-
Water phase only DT50 (days)		-	-	-

Soil adsorption and mobility:

Property		Value	Source/Quality Score/Other Information	Interpretation
Linear	Kd	-	Q2	Mobile
	Koc	58
	Notes and range	Estimated
Freundlich	Kf	-	-	-
	Kfoc	-
	1/n	-
	Notes and range	-
pH sensitivity		-

ECOTOXICOLOGY

Property		Value	Source/Quality Score/Other Information	Interpretation
Bio-concentration factor	BCF	1.5	F2 Estimated	Low potential
	CT50 (days)	Not available		-
Bioaccumulation potential		-	Calculated	Low
Mammals - Acute oral LD50 (mg kg-1)		-	-	-
Mammals - Short term dietary NOEL	(mg kg-1)	-	-	-
	(ppm diet)	-		-
Birds - Acute LD50 (mg kg-1)		-	-	-
Birds - Short term dietary (LC50/LD50)		-	-	-
Fish - Acute 96 hour LC50 (mg l-1)		-	-	-
Fish - Chronic 21 day NOEC (mg l-1)		-	-	-
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1)		-	-	-
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1)		-	-	-
Aquatic crustaceans - Acute 96 hour LC50 (mg l-1)		-	-	-
Sediment dwelling organisms - Acute 96 hour LC50 (mg l-1)		-	-	-
Sediment dwelling organisms - Chronic 28 day NOEC, static, water (mg l-1)		-	-	-
Sediment dwelling organisms - Chronic 28 day NOEC, sediment (mg kg-1)		-	-	-
Aquatic plants - Acute 7 day EC50, biomass (mg l-1)		-	-	-
Algae - Acute 72 hour EC50, growth (mg l-1)		-	-	-
Algae - Chronic 96 hour NOEC, growth (mg l-1)		-	-	-
Honeybees - Acute 48 hour LD50 (µg bee-1)		-	-	-
Earthworms - Acute 14 day LC50 (mg kg-1)		-	-	-
Earthworms - Chronic 14 day NOEC, reproduction (mg kg-1)		-	-	-
Other soil macro-organisms - e.g. Collembola	LR50product ha EC50product ha NOECproduct ha % Effect	-	-	-
Other arthropod (1)	LR50 g ha-1	-	-	-
	% Effect	-	-	-
Other arthropod (2)	LR50 g ha-1	-	-	-
	% Effect	-	-	-
Soil micro-organisms		-	-	-
Mesocosm study data	NOEAEC mg l-1	-	-	-
	NOEAEC mg l-1	-	-	-

HUMAN HEALTH AND PROTECTION

General:

Property		Value	Source/Quality Score/Other Information	Interpretation
Mammals - Acute oral LD50 (mg kg-1)		-	-	-
Mammals - Dermal LD50 (mg kg-1 body weight)		-	-	-
Mammals - Inhalation LC50 (mg l-1)		-	-	-
Other Mammal toxicity endpoints		-		-
ADI - Acceptable Daily Intake (mg kg-1bw day-1)		-	-	-
ARfD - Acute Reference Dose (mg kg-1bw day-1)		-	-	-
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1)		-	-	-
Dermal penetration studies (%)		-	-	-
Dangerous Substances Directive 76/464		-	-	-
Exposure Limits		-	-	-
Exposure Routes	Public	-
	Occupational	-
Examples of European MRLs (mg kg-1)	Value	-
	Note	For the EU pesticides database click here
Drinking Water MAC (µg l-1)		-	-	-

Health issues:

Carcinogen	Mutagen	Endocrine disrupter	Reproduction / development effects	Acetyl cholinesterase inhibitor	Neurotoxicant	Respiratory tract irritant	Skin irritant	Eye irritant
-	-	-	-	-		-	-	-
General human health issues		[No further information available]

: Yes, known to cause a problem
: No, known not to cause a problem
: Possibly, status not identified
- : No data

Handling issues:

Property		Value	Source/Quality Score/Other Information	Interpretation
General		[No information available]
EC Risk Classification		-
EC Safety Classification		-
WHO Classification		NL	-	Not listed
US EPA Classification (formulation)		Not applicable	-	-
UN Number		-
Waste disposal & packaging		-

TRANSLATIONS