Search   
MSDS 
:
 Phosphorous Acid, Crystalline
CAS 
:
 10294-56-1
SYNONYMS 
:
 Phosphonic acid; Phosphorous acid.
**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
|----------------|--------------------------------------|----------|-----------|
| 10294-56-1 |Phosphorous acid | >97 | 233-663-1 |
|----------------|--------------------------------------|----------|-----------|
+----------------+--------------------------------------+----------+-----------+
Text for R-phrases: see Section 16
Hazard Symbols: C
Risk Phrases: 22 35

**** SECTION 3 - HAZARDS IDENTIFICATION ****

EMERGENCY OVERVIEW
Harmful if swallowed. Causes severe burns.Hygroscopic (absorbs
moisture from the air).Air sensitive.

Potential Health Effects
Eye:
Contact with liquid is corrosive to the eyes and causes severe
burns.
Skin:
Contact with liquid is corrosive and causes severe burns and
ulceration. May cause skin rash (in milder cases), and cold and
clammy skin with cyanosis or pale color.
Ingestion:
Causes gastrointestinal tract burns.
Inhalation:
Irritation may lead to chemical pneumonitis and pulmonary edema.
Causes severe irritation of upper respiratory tract with coughing,
burns, breathing difficulty, and possible coma. Aspiration may lead
to pulmonary edema. May cause systemic effects.
Chronic:
Effects may be delayed. Repeated contact may cause corneal damage.

**** SECTION 4 - FIRST AID MEASURES ****

Eyes:
In case of contact, immediately flush eyes with plenty of water for
at least 15 minutes. Get medical aid immediately.
Skin:
In case of contact, immediately flush skin with plenty of water for
at least 15 minutes while removing contaminated clothing and shoes.
Get medical aid immediately. Wash clothing before reuse.
Ingestion:
If swallowed, do NOT induce vomiting. Get medical aid immediately.
If victim is fully conscious, give a cupful of water. Never give
anything by mouth to an unconscious person.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial
respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:

**** SECTION 5 - FIRE FIGHTING MEASURES ****

General Information:
As in any fire, wear a self-contained breathing apparatus in
pressure-demand, MSHA/NIOSH (approved or equivalent), and full
protective gear. During a fire, irritating and highly toxic gases
may be generated by thermal decomposition or combustion. Use water
spray to keep fire-exposed containers cool. Substance is
noncombustible. Contact with metals may evolve flammable hydrogen
gas.
Extinguishing Media:
For small fires, use water spray, dry chemical, carbon dioxide or
chemical foam. Do NOT get water inside containers. For large fires,
use dry chemical, carbon dioxide, alcohol-resistant foam, or water
spray.

**** SECTION 6 - ACCIDENTAL RELEASE MEASURES ****

General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal
container. Clean up spills immediately, observing precautions in the
Protective Equipment section. Avoid generating dusty conditions.
Cover with sand, dry lime or soda ash and place in a closed container
for disposal. Provide ventilation.

**** SECTION 7 - HANDLING and STORAGE ****

Handling:
Wash thoroughly after handling. Minimize dust generation and
accumulation. Do not breathe dust, vapor, mist, or gas. Do not get in
eyes, on skin, or on clothing. Keep container tightly closed. Use
only in a chemical fume hood. Discard contaminated shoes.
Storage:
Store in a tightly closed container. Store in a cool, dry,
well-ventilated area away from incompatible substances. Keep away
from metals. Corrosives area. Do not store in metal containers.

**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****

Engineering Controls:
Facilities storing or utilizing this material should be equipped
with an eyewash facility and a safety shower. Use adequate
ventilation to keep airborne concentrations low.
Exposure Limits
CAS# 10294-56-1:

CAS# 13598-36-2:


Personal Protective Equipment

Eyes:
Wear chemical splash goggles.
Skin:
Wear appropriate protective gloves to prevent skin
exposure.
Clothing:
Wear appropriate protective clothing to prevent skin
exposure.
Respirators:
A respiratory protection program that meets OSHA's 29
CFR 1910.134 and ANSI Z88.2 requirements or European
Standard EN 149 must be followed whenever workplace
conditions warrant respirator use.

**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****

Physical State: Crystals
Color: white or yellow
Odor: none reported
pH: Acidic in solution.
Vapor Pressure: Not applicable.
Viscosity: Not applicable.
Boiling Point: 392 deg F
Freezing/Melting Point: 165 deg F
Autoignition Temperature: Not available.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: Soluble.
Specific Gravity/Density: 1.7
Molecular Formula: H3PO3
Molecular Weight: 82.0

**** SECTION 10 - STABILITY AND REACTIVITY ****

Chemical Stability:
Stable at room temperature in closed containers under normal storage
and handling conditions. Hygroscopic: absorbs moisture or water from
the air. Phosphorous acid, ortho reacts with air to form Phosphoric
acid.
Conditions to Avoid:
Dust generation, exposure to air, exposure to moist air or water.
Incompatibilities with Other Materials:
Strong bases, strong oxidizing agents, strong reducing agents, water,
metals.
Hazardous Decomposition Products:
Oxides of phosphorus, phosphine.
Hazardous Polymerization: Has not been reported.

**** SECTION 11 - TOXICOLOGICAL INFORMATION ****

RTECS#:
CAS# 10294-56-1 unlisted.
CAS# 13598-36-2: SZ6400000
LD50/LC50:
Not available.
CAS# 13598-36-2: Oral, mouse: LD50 = 1700 mg/kg; Oral, rat: LD50 =
1895 mg/kg.
Carcinogenicity:
Phosphorous acid -
Not listed by ACGIH, IARC, or NTP.
Phosphorous acid (two legit CAS numbers) -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

**** SECTION 12 - ECOLOGICAL INFORMATION ****



**** SECTION 13 - DISPOSAL CONSIDERATIONS ****

Products which are considered hazardous for supply are classified as Special
Waste and the disposal of such chemicals is covered by regulations which may
vary according to location. Contact a specialist disposal company or the local
waste regulator for advice. Empty containers must be decontaminated before
returning for recycling.

**** SECTION 14 - TRANSPORT INFORMATION ****

IATA
Shipping Name: PHOSPHOROUS ACID
Hazard Class: 8
UN Number: 2834
Packing Group: III
IMO
Shipping Name: PHOSPHOROUS ACID
Hazard Class: 8
UN Number: 2834
Packing Group: III
RID/ADR
Shipping Name: PHOSPHOROUS ACID
Hazard Class: 8
UN Number: 2834
Packing group: III

**** SECTION 15 - REGULATORY INFORMATION ****

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: C
Risk Phrases:
R 22 Harmful if swallowed.
R 35 Causes severe burns.
Safety Phrases:
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 36/37/39 Wear suitable protective clothing, gloves
and eye/face protection.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 10294-56-1: No information available.
CAS# 13598-36-2: 1
Canada
CAS# 10294-56-1 is listed on Canada's DSL List.
CAS# 13598-36-2 is listed on Canada's DSL List.
CAS# 10294-56-1 is not listed on Canada's Ingredient Disclosure List.
CAS# 13598-36-2 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 10294-56-1 is listed on the TSCA inventory.
CAS# 13598-36-2 is listed on the TSCA inventory.

**** SECTION 16 - ADDITIONAL INFORMATION ****

Text for R-phrases from Section 2
MSDS Creation Date: 12/12/1997 Revision #7 Date: 1/15/2004

The information above is believed to be accurate and represents the best
information currently available to us. However, we make no warranty of
merchantability or any other warranty, express or implied, with respect to
such information, and we assume no liability resulting from its use. Users
should make their own investigations to determine the suitability of the
information for their particular purposes. In no way shall the company be
liable for any claims, losses, or damages of any third party or for lost
profits or any special, indirect, incidental, consequential or exemplary
damages, howsoever arising, even if the company has been advised of
the possibility of such damages.
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
Search More   
ALL MSDS PAGES IN THIS GROUP
NAMECAS
Methyl 2-Thiofuroate, 97% 13679-61-3
(+)-Chloromethyl menthyl ether, 95%, 97% e.e. 96662-07-6
2,5-Difluorobenzonitrile, 99% 64248-64-2
2-Methylbenzothiazole, 96% (gc) 120-75-2
4-Methylmorpholine N-oxide monohydrate, 97% (titr.) 7529-22-8
Sulfonazo iii,tetrasodium salt, p.a. 68504-35-8
3,4-Dimethylbenzoic Acid, 98% 619-04-5
5-Methyltryptamine hydrochloride, 98% 55795-89-6
2,5-Dimethylbenzyl alcohol, 98% 53957-33-8
1,3-Diphenylacetone, 99% 102-04-5
N-Phenyl-o-phenylenediamine, 97% 534-85-0
Phosphorous Acid, Crystalline 10294-56-1
N,N-Dimethylformamide dicyclohexyl acetal, 99% 2016-05-9
3-Bromo-4-methoxybenzaldehyde, 98% 34841-06-0
2-Amino-6-Methylbenzoic Acid, 98% 4389-50-8
2,2,5,5-Tetramethyl-4-Phenyl-3-Imidazoline -1-Oxyl, Free Radical 39753-69-0
2,7-Dimethoxynaphthalene, 98% 3469-26-9
Fast yellow GC salt 14263-92-4
2-Ethylbutyric acid, 99% 88-09-5
(s)-(-)-sec-Phenethyl alcohol, 99% 1445-91-6
DOUBLE-TIPPED NEEDLE, 18 GAUGE STAINLESS, STEEL, 2 FEET
Chlorazol Black E, certfied 1937-37-7
4-Fluorophenylacetonitrile, 95% 459-22-3
1-Hexadecylpyridinium bromide 140-72-7
Bromoacetonitrile, 97% 590-17-0
Octane 111-65-9
4-Methylsulphonylaniline Hydrochloride , 95+% 5470-49-5
Dichloroacetic Acid, 99+% 79-43-6
1-Octanol 111-87-5
Cyclohexane-D12, 99.5 Atom % D 1735-17-7
4-Isopropoxybenzoic acid, 98% 13205-46-4
n-Undecylamine, 98% 7307-55-3
(1R,2S)-1-Amino-2-indanol, 98%, (99% e.e.) 136030-00-7
Copper(II)-Ethylenediamine Complex for Viscosity Determination of 14552-35-3
Tris-(Triphenylphosphine)-Rhodium(I)Chloride, 99.99% 14694-95-2
Tetrabutylammonium iodide, 98% 311-28-4
2,2-Dimethyl-3-Pentanol, 97% 3970-62-5
2-Aminophenol (pract), 97% (titr.) 95-55-6
Orcinol Monohydrate 6153-39-5
Olive oil 8001-25-0
Nickel (II) Bromide Hydrate, 98% 7789-49-3
1-(2,4-Dimethylphenyl)Piperazine 1013-76-9
Osmic Acid Anhydride 20816-12-0
Ethyl undecanoate, 97% 627-90-7
8-Hydroxy-1,1,7,7-tetramethyljulolidine-9- carboxaldehyde 115662-09-4
Ethyl isonicotinate, 99+% 1570-45-2
8-Hydroxy-5-Quinesulfonic Acid, Mono- Hydrate, 94% (UV-VIS) 84-88-8
Oxalic acid dihydrate 144-62-7
4-(1H)-Pyridone (Pract), 97% (UV-VIS) 108-96-3
Vanadyl(IV)-sulfate hydrate, 17-23% Vanadium 12439-96-2

Free MSDS Search ( Providing 250,000+ Material Properties )
Chemcas.com| Ads link:todaystock.net