Examples of Chemical Processing Operations

Friday, 12 August 2011 00:54

Phthalates: Physical & Chemical Properties

Chemical Name CAS-Number	Colour/Form	Boiling Point (°C)	Melting Point (°C)	Molecular Weight	Solubility in Water	Relative Density (water=1)	Relative Vapour Density (air=1)	Vapour Pressure/ (Kpa)	Inflam. Limits	Flash Point (°C)	Auto Ignition Point (°C)
DIALLYL PHTHALATE 131-17-9	nearly colourless oily liquid	160-163	-70	246.26	@ 25 °C	1.120	8.3	@ 150 °C		166
DIBUTYL PHTHALATE 84-74-2	colourless to faint yellow viscous liquid; oily liquid	340	-35	278.34	insol	1.0459	9.58	<0.01	0.5 ll 25.0 ul	157 cc	402
DICYCLOHEXYLPHTHALATE 84-61-7	white, granular solid	@ 4 mm Hg	66	330.4	insol	1.383		@ 150 °C		207
DIETHYL PHTHALATE 84-66-2	colourless, oily liquid	295	-40.5	222.3	insol	1.1175	7.7	@ 75 °C	0.7	161 oc	457
DIISODECYL PHTHALATE 26761-40-0		@ 4 mm Hg	-50	446.7	insol	0.966		@ 200 °C	0.3 ll ? ul	232 oc	402
DIISOOCTYL PHTHALATE 27554-26-3	nearly colourless, viscous liquid	370	-4	390.54	insol	0.986	13.5	<10 Pa		227	393
DIMETHYL PHTALATE 131-11-3	oily-liquid; colourless viscous liquid; pale yellow crystals	283.7	5.5	194.2	insol	1.1905	6.69	<0.01 mm Hg	0.9 ll ? ul	132	490
DIMETHYL TEREPHTHALATE 120-61-6	colourless crystals; needles from ether	288	140	194.2	sl sol	@ 25 °C	5.5	@ 150 °C	0.8 ll 11.8 ul	146 oc	500
DI-sec-OCTYL PHTALATE 117-81-7	light coloured liquid; colourless oily liquid	384	-50	390.54	@ 25 °C	0.9861	16.0	0.001	0.3 ll ? ul	215 oc	390
PHTHALIC ACID, DIHEPTYL ESTER 3648-21-3	colourless liquid	360		362.45	0.01%
PHTHALIC ACID, DIISOBUTYL ESTER 84-69-5	liquid	296.5	-64	278.33	insol	@ 15 °C				185 oc	432

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Published in 104. Guide to Chemicals

Friday, 12 August 2011 00:50

Phthalates: Physical & Chemical Hazards

Chemical Name CAS-Number	Physical	Chemical	UN Class or Division / Subsidiary Risks
DIALLYL PHTHALATE 131-17-9		The substance will polymerize if not inhibited, due to heating or in the presence of a catalyst • On combustion, forms toxic carbon oxides • Reacts with strong oxidants, bases and acids
DIBUTYL PHTHALATE 84-74-2	As a result of flow, agitation, etc, electrostatic charges can be generated	The substance decomposes on burning producing toxic and irritating fumes (phthalic anhydride)
DICYCLOHEXYL PHTHALATE 84-61-7		Reacts with acids, bases
DIETHYL PHTHALATE 84-66-2		The substance decomposes on heating or on burning producing toxic fumes and gases (phthalic anhydride) • Attacks some plastics
DIISODECYL PHTHALATE 26761-40-0		Attacks some forms of plastics
DIISOOCTYL PHTHALATE 27554-26-3		Reacts with strong oxidants
DI-sec-OCTYL PHTALATE 117-81-7		Reacts with strong oxidants, acids, alkalis, and nitrates

For UN Class: 1.5 = very insensitive substances which have a mass explosion hazard; 2.1 = flammable gas; 2.3 = toxic gas; 3 = flammable liquid; 4.1 = flammable solid; 4.2 = substance liable to spontaneous combustion; 4.3 = substance which in contact with water emits flammable gases; 5.1 = oxidizing substance; 6.1 = toxic; 7 = radioactive; 8 = corrosive substance

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Published in 104. Guide to Chemicals

Friday, 12 August 2011 00:48

Phthalates: Health Hazards

Chemical Name CAS-Number	ICSC Short-Term Exposure	ICSC Long-Term Exposure	ICSC Routes of Exposure and Symptoms	US NIOSH Target Organs Routes of Entry	US NIOSH Symptoms
DIALLYL PHTHALATE 131-17-9	eyes; skin; lungs	liver	Ingestion: diarrhoea, laboured breathing
DIBUTYL PHTHALATE 84-74-2				Eyes; resp sys; GI tractInh; ing; con	Irrit eyes, upper resp sys, stomach
DICYCLOHEXYL PHTHALATE 84-61-7	eyes; skin; resp. tract
DIETHYL PHTHALATE 84-66-2	eyes; skin; CNS		Inhalation: dizziness, dullness Skin: redness Eyes: redness, pain	Eyes; skin; resp sys; CNS; PNS; repro sysInh; inh; con	Irrit eyes, skin, nose, throat; head, dizz, nau; lac; possible polyneur, vestibular dysfunc; pain, numb, weak, spasms in arms & legs; in animals: repro effects
DIISODECYL PHTHALATE 26761-40-0	eyes; skin	liver	Skin: redness Eyes: redness Ingestion: dizziness, nausea, vomiting
DIMETHYL PHTHALATE 131-11-3	eyes; nose; throat	birth defects		Eyes; resp sys; GI tractInh; ing; con	Irrit eyes, upper resp sys; stomach pain
DIMETHYL TEREPHTHALATE 120-61-6	eyes
DI-sec-OCTYL PHTHALATE 117-81-7	eyes; skin; resp. tract; lungs; GI tract	skin	Inhalation: cough, sore throat	eyes; GI tract; resp sys; CNS; liver; repro sys (in animals: liver tumors)Inh; ing; con	Irrit eyes, muc memb; in animals: liver damage; terato effects; (carc)

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Published in 104. Guide to Chemicals

Friday, 12 August 2011 00:46

Phthalates: Chemical Identification

Chemical Formula	Chemical	Synonyms UN Code	CAS-Number
131179	DIALLYL PHTHALATE	1,2-Benzenedicarboxylic acid, di-2-propenyl ester ; Phthalic acid, diallyl ester; o-Phthalic acid, diallyl ester	131-17-9
84742	DIBUTYL PHTHALATE	o-Benzenedicarboxylic acid, dibutyl ester; Benzene-o-dicarboxylic acid di-n-butyl ester; DBP; Dibutyl 1,2-benzenedicarboxylate; Dibutyl phthalate; Di-n-butyl phthalate; n-Butylphthalate; Polycizer dbp	84-74-2
84617	DICYCLOHEXYL PHTHALATE	1,2-Benzenedicarboxylic acid, dicyclohexyl ester; Phthalic acid, dicyclohexyl ester	84-61-7
84662	DIETHYL PHTHALATE	1,2-Benzenedicarboxylic acid, diethyl ester; Ethyl phthalate; Neantine; Palatinol a; Phthalol	84-66-2
3648213	DIHEPTYL PHTHALATE	Di-n-heptyl phthalate; Heptyl phthalate	3648-21-3
26761400	DIISODECYL PHTHALATE	1,2-Benzenedicarboxylic acid, bis(isodecyl)phthalate; DIDP (plasticizer); Diisodecyl phthalate; Phthalic acid, diisodecyl ester	26761-40-0
131113	DIMETHYL PHTHALATE	1,2-Benzenedicarboxylic acid, dimethyl ester; Dimethyl-1,2-benzenedicarboxylate; DMP; Methyl phthalate; Phthalic acid methyl ester	131-11-3
117817	DI-sec-OCTYL PHTHALATE	1,2-Benzenedicarboxylic acid, bis(2-ethylhexyl) ester; Bis(2-ethylhexyl)-1,2-benzenedicarboxylate; Bis(2-ethylhexyl)phthalate; Di(2-ethylhexyl)orthophthalate	117-81-7
84695	PHTHALIC ACID, DIISOBUTYL ESTER	DIBP; Diisobutyl phthalate; Hexaplas M; 1B; Palatinol IC	84-69-5
27554263	PHTHALIC ACID, DIISOOCTYL ESTER	1,2-Benzenedicarboxylic acid, diisooctyl ester; Diisooctyl phthalate; Isooctyl phthalate; Phthalic acid, bis(6-methylheptyl)ester	27554-26-3
27253265	PHTHALIC ACID, DIISOTRIDECYL ESTER	1,2-Benzenedicarboxylic acid, diisotridecyl ester; Diisotridecyl phthalate	27253-26-5
636099	TEREPHTHALIC ACID, DIETHYL ESTER	1,4-Benzenedicarboxylic acid, diethyl ester; Diethyl terephthalate	636-09-9
120616	TEREPHTHALIC ACID, DIMETHYL ESTER	1,4-Benzenedicarboxylic acid, dimethyl 1,4-benzenedicarboxylate; Dimethyl p-phthalate; Dimethyl terephthalate; DMT; Methyl 4-carbomethoxybenzoate; Terephthalic acid methyl ester	120-61-6

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Published in 104. Guide to Chemicals

Friday, 12 August 2011 00:38

Silicon & Organosilicon Compounds: Physical & Chemical Properties

Chemical Name CAS-Number	Colour/Form	Boiling Point (°C)	Melting Point (°C)	Molecular Weight	Solubility in Water	Relative Density (water=1)	Relative Vapour Density (air=1)	Vapour Pressure/ (Kpa)	Inflam. Limits	Flash Point (°C)	Auto Ignition Point (°C)
CALCIUM SILICATE 1344-95-2	white powder				insol	2.9
ETHYL SILICATE 78-10-4	colourless liquid	168.8	-82.5	208.30	insol	0.933	7.22	1.0 mm Hg	1.3 ll 23 ul	52 oc
METHYL DICHLOROSILANE 75-54-7	colourless liquid	41	-93	115.04	sl sol	@ 27 °C	3.97	46	6.0 ll 55 ul	-9 cc	316
METHYL SILICATE 681-84-5	colourless liquid	121-122	-2	152.25	reacts	1.032	5.3	2.2
METHYL TRICHLOROSILANE 75-79-6	colourless liquid	66.4	-90	149.48	reacts	@ 25 °C	5.17	17.9	5.1 ll ? ul	8	404
POLYDIMETHYLSILOXANE 9016-00-6	clear fluids available in wide range of viscosities				insol	0.97				>200
SILANE, DICHLORO- 4109-96-0	compressed, liquified gas	8.2	-122.0	101.01		1.22	3.484		4.1 ll 99 ul	-307	100 58
SILICIC ACID, DISODIUM SALT 6834-92-0	colourless monoclinic crystals; usually obtained as a glass; also orthorhombic crystals; dustless white granules		1089	122.07	sol	2.614
SILICON CARBIDE 409-21-2	exceedingly hard, green to bluish-black, iridescent, sharp crystals; hexagonal or cubic		2600	40.07	insol	3.23
SILICON MONOXIDE 10477-28-6	amorphous black solid					2.15-2.18
SILICON TETRAHYDRIDE 7803-62-5	gas; colourless	-112	-185	32.13	slowly decomposes	@ 19 °C	1.114		1.37	-22
SILICON TETRAFLUORIDE 7783-61-1	colourless gas	-86	-90.2	104.06		@ -80 °C (liquid)	3.57
SILICON 7440-21-3	black to gray, lustrous, needle-like crystals or octahedral platelets (cubic system); amorphous form is dark brown powder	2355	1410	28.0855	insol		@ 25 °C/4 °C
SODIUM SILICATE 1344-09-8	colourless to white or grayish-white, crystal-like pieces or lumps; lumps of greenish glass; white powders; liquids cloudy or clear				sl sol
TETRACHLOROSILANE 10026-04-7	colourless, clear, mobile liquid	59	-70	169.89		@ 0 °C/4 °C	5.9	@ 5.4 °C
TRICHLOROSILANE 10025-78-2	colourless liquid	31.8	-126.5	135.47		1.3417	4.7	@ -16.4 °C	1.2 ll 90.5 ul	-14 oc	93-104
TRIMETHYLCHLOROSILANE 75-77-4	colourless liquid	57	-57.7	108.66	reacts	@ 25 °C	3.75	26.7	1.8 ll 6 ul	-27

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Published in 104. Guide to Chemicals

Friday, 12 August 2011 00:34

Silicon & Organosilicon Compounds: Physical & Chemical Hazards

Chemical Name CAS-Number	Physical	Chemical	UN Class or Division / Subsidiary Risks
ETHYL SILICATE 78-10-4			3
METHYL DICHLOROSILANE 75-54-7			4.3/ 3/ 8
METHYL TRICHLOROSILANE 75-79-6	The vapour is heavier than air and may travel along the ground; distant ignition possible	The substance decomposes on heating producing hydrogen chloride • Reacts violently with strong oxidants • Reacts violently with water and moisture producing hydrogen chloride, causing fire and explosion hazard • Attacks metals like aluminium and magnesium	3/ 8
POLYDIMETHYLSILOXANE 9016-00-6		The substance decomposes on heating (>150 ºC) producing formaldehyde in small amounts
SILANE, DICHLORO- 4109-96-0	The gas is heavier than air	Reacts violently with water • On contact with air it emits hydrogen chloride
SILICIC ACID, DISODIUM SALT 6834-92-0		The substance is a strong base, it reacts violently with acid and is corrosive in moist air to metals like zinc, aluminium, tin and lead forming a flammable/explosive gas (hydrogen)
SILICON TETRAHYDRIDE 7803-62-5	The gas is heavier than air	The substance may spontaneously ignite on contact with air room temperature
SILICON TETRAFLUORIDE 7783-61-1	The gas is heavier than air	Reacts violently with water • On contact with air it emits hydrogen fluoride	2.3/ 8
SILICON 7440-21-3			4.1
TETRACHLOROSILANE 10026-04-7	The vapour is heavier than air	Reacts violently with water • On contact with air it emits hydrogen chloride and silicic acid
TRICHLOROSILANE 10025-78-2	The vapour is heavier than air and may travel along the ground; distant ignition possible	Reacts violently with water • On contact with air it emits hydrogen chloride • Attacks many metals in presence of water	4.3/ 3/ 8
TRIMETHYLCHLOROSILANE 75-77-4	The vapour is heavier than air and may travel along the ground; distant ignition possible	The substance decomposes on heating producing toxic and corrosive fumes (hydrogen chloride, phosgene) • Reacts violently with water, ketones, alcohol, amines and many other substances, causing explosion hazard • On contact with air it emits corrosive fumes of hydrogen chloride	3/ 8

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Published in 104. Guide to Chemicals

Friday, 12 August 2011 00:32

Silicon & Organosilicon Compounds: Health Hazards

Chemical Name CAS-Number	ICSC Short-Term Exposure	ICSC Long-Term Exposure	ICSC Routes of Exposure and Symptoms	US NIOSH Target Organs & Routes of Entry	US NIOSH Symptoms
ETHYL SILICATE 78-10-4				Resp sys; liver; kidneys; blood; skin; eyes Inh; ing; con	Irrit eyes, nose; in animals: lac, dysp, pulm edema; tremor, narco; liver, kidney damage; anemia
METHYL DICHLOROSILANE 75-54-7	eyes; skin; resp tract; lungs
METHYL SILICATE 681-84-5	resp tract; eyes; lungs	kidneys; liver	Inhalation: burning sensation, cough, shortness of breath, sore throat, symptoms may be delayed Eyes: redness, pain, loss of vision	Eyes; resp sys; kidneys Inh; ing; con (vapliq)	Irrit eyes, corn damage (following even short term exposure to vapor); lung, kidney inj; pulm edema
METHYL TRICHLOROSILANE 75-79-6	eyes; skin; resp tract; lungs		Inhalation: corrosive, burning sensation, cough, shortness of breath, unconsciousness, symptoms may be delayed Skin: corrosive, redness, skin burns, pain, blisters Eyes: corrosive, redness, pain, loss of vision, severe deep burns
POLYDIMETHYLSILOXANE 9016-00-6	eyes		Eyes: redness, pain
SILANE, DICHLORO- 4109-96-0	eyes; skin; resp tract; lungs	lungs	Inhalation: burning sensation, cough, laboured breathing, shortness of breath, sore throat Skin: redness, skin burns, burning sensation, pain, blisters Eyes: redness, pain, loss of vision
SILICON TETRAHYDRIDE 7803-62-5	eyes; resp tract; lungs	lungs	Inhalation: burning sensation, cough, laboured breathing, shortness of breath, sore throat, symptoms may be delayed Eyes: redness, pain Ingestion: weakness	Eyes; skin; resp sys; CNS Inh	Irrit eyes, skin, muc memb; nau, head
SILICIC ACID, DISODIUM SALT 6834-92-0	eyes; skin; resp tract; lungs	skin	Inhalation: burning sensation, cough, shortness of breath Skin: redness, serious skin burns, pain, blisters Eyes: redness, pain, blurred vision, severe deep burns Ingestion: burning sensation, diarrhoea, shock or collapse, vomiting, collapse
SILICON TETRAFLUORIDE 7783-61-1	eyes; skin; resp tract; lungs		Inhalation: burning sensation, cough, laboured breathing, shortness of breath, sore throat Skin: redness, skin burns, pain, blisters Eyes: redness, pain, loss of vision, severe deep burns
TETRACHLOROSILANE 10026-04-7	eyes; lungs		Inhalation: burning sensation, cough, laboured breathing, shortness of breath, sore throat Skin: redness, skin burns, pain, blisters Eyes: redness, pain, loss of vision, severe deep burns
TRICHLOROSILANE 10025-78-2	eyes; skin; resp tract; lungs	lungs	Inhalation: burning sensation of the chest, cough, laboured breathing, shortness of breath, sore throat Skin: redness, skin burns, burning sensation, pain, blisters Eyes: redness, pain, loss of vision
TRIMETHYLHLOROSILANE 75-77-4	eyes; skin; resp tract; lungs	skin	Ingestion: Inhalation: burning sensation, cough, laboured breathing Skin: redness, pain, blisters Eyes: redness, pain, severe deep burnsabdominal pain, burning sensation, weakness

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Published in 104. Guide to Chemicals

Friday, 12 August 2011 00:30

Silicon & Organosilicon Compounds: Chemical Identification

Chemical Formula	Chemical	Synonyms UN Code	CAS-Number
1344952	CALCIUM SILICATE	Calcium hydrosilicate; Calcium monosilicate; Calcium polysilicate; Calcium silicate; Calflo E; Calsil; CS lafarge; Florite R; Marimet 45; Microcal 160; Promaxon P60; Silene WF; Silmos t; Solex; Stabinex NW 7PS; Starlex l; SW 400; Toyofine A	1344-95-2
78104	ETHYL SILICATE	Ethyl orthosilicate; Ethyl silicate; Extrema; Silane, tetraethoxy-; TEOS; Tetraethoxysilane; Tetraethyl orthosilicate; Tetraethyl silicate UN1292	78-10-4
75547	METHYL DICHLOROSILANE	Dichloromethylsilane UN1242	75-54-7
681845	METHYL SILICATE	Methyl orthosilicate; Methyl silicate; Silicic acid, methyl ester of ortho-; Silicic acid, tetramethyl ester; Tetramethoxysilane; Tetramethyl silicate UN2606	681-84-5
75796	METHYL TRICHLOROSILANE	Methylsilicochloroform; Methylsilyl trichloride; Trichloromethylsilane UN1250	75-79-6
9016006	POLYDIMETHYLSILOXANE	Af 72; Af 75; Dimethicone 350; Dow Corning 346; Geon; Good-rite; Gum; Hycar; Latex; Methyl silicone; Polymethylsiloxane	9016-00-6
4109960	SILANE, DICHLORO-		4109-96-0
6834920	SILICIC ACID, DISODIUM SALT	B-W; Crystamet; Disodium metasilicate; Disodium monosilicate; Metso 20; Metso beads, drymet; Silicic acid, disodium salt ; Sodium silicate; Water glass	6834-92-0
Si	SILICON		7440-21-3
SiC	SILICON CARBIDE	Annanox CK; Betarundum; Ultrafine; Carbofrax M; Carbolon; Carbon silicide; Crystar; Crystolon 37; Crystolon 39; Densic c 500	409-21-2
SiO	SILICON MONOXIDE		10477-28-6
7803625	SILICON TETRAHYDRIDE	Flots 100SCO; Monosilane; Silane; Silicane UN2203	7803-62-5
7783611	SILICON TETRAFLUORIDE	Perfluorosilane; Silane, tetrafluoro-; Tetrafluorosilane UN1859	7783-61-1
10026047	TETRACHLOROSILANE	Extrema; Silicon chloride; Silicio(tetracloruro di); Silicon tetrachloride UN1818	10026-04-7
10025782	TRICHLOROSILANE	Silicochloroform; Trichloromonosilane UN1295	10025-78-2
75774	TRIMETHYL CHLOROSILANE	Chlorotrimethylsilane; Silane, trimethylchloro-; Silicane, chlorotrimethyl-; Tl 1163; Trimethylsilyl chloride UN1298	75-77-4

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Published in 104. Guide to Chemicals

Friday, 12 August 2011 00:24

Sulphur Compounds, Organic: Physical & Chemical Properties

Chemical Name CAS-Number	Colour/Form	Boiling Point (°C)	Melting Point (°C)	Molecular Weight	Solubility in Water	Relative Density (water=1)	Relative Vapour Density (air=1)	Vapour Pressure/ (Kpa)	Inflam. Limits	Flash Point (°C)	Auto Ignition Point (°C)
n-BUTYLMERCAPTAN 109-79-5	colourless liquid	98.4	-115.7	90.2	sl sol	0.8337	3.1	4.0		2 cc	<225
tert-BUTYLMERCAPTAN 75-66-1	mobile liquid; colourless liquid	64	-0.5	90.2	insol	0.8002	3.1	19.0		-26 cc
CETYLMERCAPTAN 2917-26-2	liquid or solid	184	18		insol	0.84	8.9	10 Pa		135
CYCLOHEXYLMERCAPTAN 1569-69-3	liquid	158	-118	116.2	insol	0.9782	4.00	1.3		43 cc
DECYLMERCAPTAN 143-10-2	colourless liquid	241	-26	174.3	insol	0.84	6.0	<10 Pa
DODECYLMERCAPTAN 112-55-0	water-white to pale yellow liquid; oily colourless liquid	@ 15 mm Hg	-7	202.4	insol	0.8450	7.0	@ 25 °C		1278 oc	230
ETHYLMERCAPTAN 75-08-1	colourless liquid	35	-144.4	62.13	sl sol	0.83907	2.14	589	2.8 ll 18.0 ul	-483	299
n-HEPTYLMERCAPTAN 1639-09-4		177	-43	132.26	insol	0.8427
n-HEXYLMERCAPTAN 111-31-9		151	-81	118.23	insol	0.8424
2-MERCAPTOETHANOL 60-24-2	water-white mobile liquid	@ 742 mm Hg		78.13	sol	1.1143	2.7	1.00 mm Hg
METHYLMERCAPTAN 74-93-1	water-white liquid when below boiling point, or colourless gas	5.9	-123	48.1	sl sol	0.8665	1.66	@ 26.1 °C	3.9 ll 21.8 ul	-18
METHANESULFONYL CHLORIDE 124-63-0	pale yellow liquid	@ 18 mm Hg	-32	114.55	insol	1.4573
OCTADECANETHIOL 2885-00-9	solid	205-209	25			0.8420
n-OCTANETHIOL 111-88-6	water-white liquid	199.1	-49.2	146.30		0.8433				46
1-PENTANETHIOL 110-66-7	liquid	@ 460 mm Hg	-75.7	104.21	insol	0.8421	3.59	@25 °C		18 oc
PERCHLOROMETHYLMERCAPTAN 594-42-3	oily, yellow liquid; yellow to orange-red	147.5		185.88	insol	1.6947	6.414	3 mm Hg
PHENYLMERCAPTAN 108-98-5	water-white liquid; prism-like crystals from petroleum ether	168	-14.8	110.17	insol	1.0766	3.8	@ 18 °C		<55
PROPANETHIOL 107-03-9	colourless, mobile liquid	67-68	-113.3	76.17	sl sol	0.8411 g/ml		@ 25 °C		-20
SODIUM DODECYLBENZENESULFONATE 25155-30-0	white to light yellow flakes, granules, or powder		>300		sol	1.0 for 60% slurry
THIOACETAMIDE 62-55-5	crystals from benzene; colourless leaflets; crystals from alc, plates from ether		116	75.1	v sol
THIOACETIC ACID 507-09-5	yellow liquid	93	<-17	76.1	sl sol	1.064	2.62			18-21
2,2'-THIODIETHANOL 111-48-8		164-166	-10	122.2		1.1819
THIOGLYCOLIC ACID 68-11-1	colourless liquid	@ 20 mm Hg	-16.5	92.1	misc	1.3253		@ 18 °C

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Published in 104. Guide to Chemicals

Friday, 12 August 2011 00:22

Sulphur Compounds, Organic: Physical & Chemical Hazards

Chemical Name CAS-Number	Physical	Chemical	UN Class or Division / Subsidiary Risks
ANTU 86-88-4		The substance decomposes on heating producing toxic fumes including nitrogen oxides and sulphur oxides • Reacts with strong oxidants causing fire and explosion hazard	6.1
BENZENESULPHONYL CHLORIDE 98-09-9			8
n-BUTYLMERCAPTAN 109-79-5	The vapour is heavier than air and may travel along the ground; distant ignition possible	The substance decomposes on burning or heating, producing highly toxic fumes (sulphur dioxide) • Reacts with acids, bases, alkali metals, and strong oxidants	3
tert-BUTYLMERCAPTAN 75-66-1	The vapour is heavier than air and may travel along the ground; distant ignition possible	The substance decomposes on burning producing highly toxic gases including sulphur oxides • Reacts with strong acids, strong bases, alkali metals, strong reducing agents, strong oxidants
CETYLMERCAPTAN 2917-26-2		The substance decomposes on burning producing highly toxic gases including sulphur oxides • Reacts violently with strong oxidants, acids, reducing agents, alkali metals
CYCLOHEXYLMERCAPTAN 1569-69-3		The substance decomposes on burning producing highly toxic gases including sulphur dioxide • Reacts with strong oxidants, reducing agents, and alkali metals	3
DECYLMERCAPTAN 143-10-2		The substance decomposes on burning producing highly toxic gases including sulphur dioxide • Reacts with strong oxidants and strong bases
DIETHYLSULPHATE 64-67-5		The substance decomposes on heating producing flammable and toxic fumes • The substance is a strong oxidant and reacts with combustible and reducing materials • The substance is a strong reducing agent and reacts with oxidants • The solution in water is a strong acid, it reacts violently with bases and is corrosive	6.1
DIETHYLSULPHIDE 352-93-2			3
DIMETHYLSULPHATE 77-78-1			6.1/ 8
DIMETHYLSULPHIDE 75-18-3	The vapour is heavier than air and may travel along the ground; distant ignition possible	The substance decomposes on heating and on burning producing toxic and corrosive fumes (hydrogen sulphide and sulphur oxides) • Reacts violently with strong oxidants causing fire and explosion hazard	3
DIMETHYLSULPHOXIDE 67-68-5	The vapour is heavier than air and may travel along the ground; distant ignition possible	The substance decomposes on heating above 150 °C or on burning producing toxic fumes • Reacts violently with strong oxidants such as perchlorates
DODECYLMERCAPTAN 112-55-0		The substance decomposes on burning producing highly toxic gases including sulphur dioxide • Reacts violently with strong oxidants and alkali metals
ETHYLMERCAPTAN 75-08-1	The vapour is heavier than air and may travel along the ground; distant ignition possible	On combustion, forms carbon monoxide, sulphur oxides and hydrogen sulphide • The substance is a weak acid • Reacts with oxidants causing fire and explosion hazard • Reacts vigourously with strong acids and bases causing toxic hazard	3
LAURYL SODIUM SULPHATE 151-21-3		On combustion, forms toxic gases • Gives off toxic fumes in a fire
MERCAPTOACETIC ACID 68-11-1			8
2-MERCAPTOETHANOL 60-24-2			8
METHANESULPHONYL CHLORIDE 124-63-0			6.1/ 8
D,L-METHIONINE 59-51-8		The substance decomposes on heating producing sulphur oxides, nitrous oxides • Reacts with strong oxidants
METHYLMERCAPTAN 74-93-1	The gas is heavier than air and may travel along the ground; distant ignition possible	The substance decomposes on heating and on burning producing toxic sulphur oxides • Reacts violently with strong oxidants • Reacts with acids to form flammable and toxic gas (hydrogen sulphide)	2.3/ 2.1
1-PENTANETHIOL 110-66-7			3
PERCHLOROMETHYLMERCAPTAN 594-42-3			6.1
PHENYLMERCAPTAN 108-98-5		The substance decomposes on heating producing toxic fumes (sulphur oxides and carbon monoxide) • Reacts with acids to form toxic fumes (sulphur oxides)	6.1/ 3
PROPANETHIOL 107-03-9			3
SODIUM DODECYLBENZENESULPHONATE 25155-30-0		The substance decomposes on heating and on burning producing toxic and irritating fumes (sulphur oxides) • Reacts with acids or acid fumes producing toxic and irritating fumes (sulphur oxides)
SODIUM THIOCYANATE 540-72-7		The substance decomposes on heating and under influence of light producing toxic fumes of sulphur oxides, nitrogen oxides and cyanides • Reacts violently with acids, strong bases and strong oxidants
THIOACETAMIDE 62-55-5		The substance decomposes on burning producing toxic fumes
THIOACETIC ACID 507-09-5	The vapour is heavier than air and may travel along the ground; distant ignition possible	The substance decomposes on burning producing toxic and corrosive fumes (sulphur oxides) • The substance is a medium strong acid and is corrosive • Reacts violently with strong oxidants causing fire and explosion hazard • Reacts slowly with water forming acetic acid and hydrogen sulfide
THIOUREA 62-56-6		The substance decomposes on heating producing toxic fumes of nitrogen oxides and sulphur oxides • acts with sufphydryl-oxidizing agents and forms complexes and adducts with metallic salts and many organic compounds including proteins and certain hydrocarbons • Reacts violently with acrolein, strong acids and strong oxidants
THIRAM 137-26-8	Dust explosion possible if in powder or granular form, mixed with air	The substance decomposes on heating and on burning producing toxic fumes (nitrogen, sulphur oxides) • Reacts with strong oxidants, acids and oxidizable materials	6.1

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Chemical Processing References

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Contents

Chemical Processing References