CAS 525-05-3 SDS Request & Safety Reference

Preliminary reference disclaimer

This preliminary safety reference is generated from structured MolGraph catalog fields and public reference-style data. It is not a supplier-issued Safety Data Sheet and should not be used as a substitute for supplier-issued documentation, workplace safety review, transport classification, or regulatory compliance decisions. For supplier SDS or COA, submit a documentation request through MolGraph.

Documentation status

Preliminary safety reference

Available

Supplier-issued SDS

Available by request

COA

Available by RFQ / lot confirmation

Transport classification

Requires shipment review

Identity

CAS Number

525-05-3

Chemical name

1-Nitroso-3,6-disulfonate

Molecular formula

C10H5NNa2O8S2

Molecular weight

377.3 g/mol

Synonyms

1-Nitroso-2-naphthol-3,6-disulfonic acid disodium salt; Nitroso-R-salt; Nitroso-R salt; Sodium 3-hydroxy-4-nitrosonaphthalene-2,7-disulfonate; Nitroso R Salt; Disodium 1-nitroso-2-naphthol-3,6-disulfonate; 2,7-NAPHTHALENEDISULFONIC ACID, 3-HYDROXY-4-NITROSO-, DISODIUM SALT; 3-Hydroxy-4-nitroso-2,7-naphthalenedisulfonic acid disodium salt; disodium 3-hydroxy-4-nitrosonaphthalene-2,7-disulfonate; Nitroso R; 2-Hydroxy-3-nitroso-2,7-naphthalenedisulfonic acid disodium salt; 2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-nitroso-, sodium salt (1:2)

InChIKey

DMKMTGULLYISBH-UHFFFAOYSA-L

PubChem CID

10672

Hazard / GHS Reference

Signal word

Warning

Catalog reference cue; confirm supplier documentation before use.

Hazard statements

H302, H312, H332, H315, H319

Catalog reference cue; confirm supplier documentation before use.

Handling & PPE

Keep container tightly closed and dry. Store in a well-ventilated place. Recommended storage conditions: sealed, dry, room temperature
Use a P95 (US) or P1 (EU UK 143) particulate respirator if exposed to harmful environments. For higher level of protection, use an OV/AG/P99 (US) or ABEK-P2 (EU UK 143) gas filter. Respirators must be tested and approved by government standards such as NIOSH (US) or CEN (EU).
Waste product: Dispose of remaining and non-recyclable solutions to a licensed company. Contact a professional agency with a waste disposal license to handle this substance. Burn contaminated packaging in a chemical incinerator with post-combustion and washing functions. Contaminated packaging: Dispose of as unutilized product.

First Aid / Accidental Release

Do not give anything to an unconscious person. Rinse mouth with water. Consult a physician.
If inhaled, move the patient to fresh air. If breathing stops, perform artificial respiration. Consult a physician.
Rinse with plenty of water for at least 15 minutes and consult a physician.
Wash with soap and plenty of water. Consult a physician.
Do not generate dust when collecting and disposing. Sweep and shovel up. Place in a suitable closed container for disposal.
Use personal protective equipment and emergency procedures. Avoid dust generation. Avoid inhaling vapors, mists or gases. Ensure adequate ventilation. Evacuate personnel to a safe area. Avoid inhaling dust. For personal protection, see
Do not allow the product to enter drains.
Waste product: Dispose of remaining and non-recyclable solutions to a licensed company. Contact a professional agency with a waste disposal license to handle this substance. Burn contaminated packaging in a chemical incinerator with post-combustion and washing functions. Contaminated packaging: Dispose of as unutilized product.

Firefighting / Stability

If necessary, wear a self-contained breathing apparatus for firefighting.
Reactivity and stability

Physical and Chemical Reference

Appearance

Golden-yellow solid; [Merck Index] Powder; [Alfa Aesar MSDS]

Catalog reference value; verify against supplier SDS before use.

Transport / Shipment Review

Shipment review

Shipment details require review before fulfillment.

Transport classification must be confirmed using supplier SDS and shipment documentation before dispatch.

Transport classification must be confirmed using supplier SDS and shipment documentation before dispatch.

Identity

CAS Number

525-05-3

Chemical name

1-Nitroso-3,6-disulfonate

Molecular formula

C10H5NNa2O8S2

Molecular weight

377.3 g/mol

Synonyms

InChIKey

DMKMTGULLYISBH-UHFFFAOYSA-L

PubChem CID

10672

Handling & PPE

Keep container tightly closed and dry. Store in a well-ventilated place. Recommended storage conditions: sealed, dry, room temperature
Use a P95 (US) or P1 (EU UK 143) particulate respirator if exposed to harmful environments. For higher level of protection, use an OV/AG/P99 (US) or ABEK-P2 (EU UK 143) gas filter. Respirators must be tested and approved by government standards such as NIOSH (US) or CEN (EU).
Waste product: Dispose of remaining and non-recyclable solutions to a licensed company. Contact a professional agency with a waste disposal license to handle this substance. Burn contaminated packaging in a chemical incinerator with post-combustion and washing functions. Contaminated packaging: Dispose of as unutilized product.

First Aid / Accidental Release

Do not give anything to an unconscious person. Rinse mouth with water. Consult a physician.
If inhaled, move the patient to fresh air. If breathing stops, perform artificial respiration. Consult a physician.
Rinse with plenty of water for at least 15 minutes and consult a physician.
Wash with soap and plenty of water. Consult a physician.
Do not generate dust when collecting and disposing. Sweep and shovel up. Place in a suitable closed container for disposal.
Use personal protective equipment and emergency procedures. Avoid dust generation. Avoid inhaling vapors, mists or gases. Ensure adequate ventilation. Evacuate personnel to a safe area. Avoid inhaling dust. For personal protection, see
Do not allow the product to enter drains.
Waste product: Dispose of remaining and non-recyclable solutions to a licensed company. Contact a professional agency with a waste disposal license to handle this substance. Burn contaminated packaging in a chemical incinerator with post-combustion and washing functions. Contaminated packaging: Dispose of as unutilized product.

CAS 525-05-3 Safety Reference and Supplier SDS Request

Documentation status

Identity

Hazard / GHS Reference

Handling & PPE

First Aid / Accidental Release

Firefighting / Stability

Physical and Chemical Reference

Transport / Shipment Review

CAS 525-05-3 Safety Reference and Supplier SDS Request

Documentation status

Identity

Hazard / GHS Reference

Handling & PPE

First Aid / Accidental Release

Firefighting / Stability

Physical and Chemical Reference

Transport / Shipment Review